Principles Of Water Quality Control

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  principles of water quality control: Principles of Water Quality Control T. H. Y. Tebbutt, 1983 This book presents the fundamental concepts of water quality control in relation to their practical applications. Although the book is primarily concerned with developed-country technology, the specialized aspects of water supply and sanitation in developing countries are also covered. A separate chapter deals with simple water supply and sanitation systems.
  principles of water quality control: Principles of Water Quality Control T.H.Y. Tebbutt, 1998-02-10 Preface; Introduction; Characteristics of waters and wastewaters; Sampling and analysis; Aquatic microbiology and ecology; Water quality and health; Biological oxidation of organic matter; Water pollution and its control; Quantitites of water and wastewater; Introduction to treatment processes; Preliminary treatment processes; Clarification; Coagulation; Flow through porous media; Aerobic biological oxidation; Anaerobic biological oxidation; Disinfection; Chemical treatment; Sludge dewatering and disposal; Tertiary treatment and water reclamation; Water supply and sanitation in developing countries; Index.
  principles of water quality control: Principles of Water Quality Thomas Waite, 2012-12-02 Principles of Water Quality presents the fundamental environmental processes that regulate the movement of materials in natural systems. This book is composed of 10 chapters that cover the chemical and microbiological processes that are operative on organic and inorganic constituents in water. This text deals first with water quality concepts, the development of criteria for water quality, and the determination of various contaminants' threshold levels that can be regulated by imposed standards. These topics are followed by descriptions of natural environmental processes, which include fundamental ecological principles and energy transfer in ecosystems resulting in species stability. The subsequent chapters are devoted to the organic and inorganic constituents that have become water quality problems, including toxic metals, inorganic nutrients, refractory organic compounds, and microorganisms. The discussion then shifts to the environmental impact of heated effluent discharges. The last three chapters focus on water quality modeling, standards, and management methods. These chapters also provide case studies using the phosphorus and the longitudinal dispersion models. This book is of value to advanced undergraduate or graduate students in environmental engineering and science, as well as in health-related disciplines.
  principles of water quality control: Principles of Water Quality Management W. Eckenfelder, 2012-04-24 Recent legislation and more stringent effluent criteria are placing increased emphasis on effective water quality management. The past few years have seen increased emphasis on research and development into both conventional wastewa ter treatment processes as well as new and advanced technology. The purpose of this book is to present a concise summary of present theory, with emphasis on the application of that theory to both municipal and industrial wastewater treatment problems. This book, in large measure, is an updating of the author's previous books, Biological Waste Treatment, published by Pergaman Press, Industrial Water Pollution Control, published by McGraw-Hill, Water Quality Engineering for Practicing Engineers, published by Cahners Books. This book should be useful as a text for advanced undergraduate and graduate courses in Water Pollution Control, Industrial Waste Treatment, and Water Qual ity Management. The content of this book has been used as a text in Continuing Education Courses sponsored by Manhattan College, Vanderbilt University, and the American Institute of Chemical Engineers. A series of problems applying the theories as developed in the text are presented where appropriate. For in-depth study of specific topical areas the reader is referred to the cited book references at the end ofthe text.
  principles of water quality control: Principles of Water Resources Thomas V. Cech, 2018-04-03 Proper management of water resources can take many forms, and requires the knowledge and expertise to work at the intersection of mathematics, geology, biology, geography, meteorology, political science, and even psychology. This book provides an essential foundation in water management and development concepts and practices, dissecting complex topics into short, understandable explanations that spark true interest in the field. Approaching the study of water resources systematically, the discussion begins with historical perspective before moving on to physical processes, engineering, water chemistry, government regulation, environmental issues, global conflict, and more. Now in its fourth edition, this text provides the most current introduction to a field that is becoming ever more critical as climate change begins to threaten water supplies around the world. As geography, climate, population growth, and technology collide, effective resource management must include a comprehensive understanding of how these forces intermingle and come to life in the water so critical to us all.
  principles of water quality control: Principles of Surface Water Quality Modeling and Control Robert V. Thomann, John A. Mueller, 1987 This book teaches the fundamentals and principles which underlie the mathematical modeling techniques used to analyze the quality of surface waters. The text first provides an overview of the different bodies of water in which water quality problems need to be addressed before examining specific problems that occur across all bodies of water.
  principles of water quality control: Water Quality Monitoring Jamie Bartram, Richard Ballance, 2020-10-14 Water quality monitoring is an essential tool in the management of water resources and this book comprehensively covers the entire monitoring operation. This important text is the outcome of a collborative programme of activity between UNEP and WHO with inputs from WMO and UNESCO and draws on the international standards of the International Organization of Standardization.
  principles of water quality control: Guidelines for Drinking-water Quality World Health Organization, 1993 This volume describes the methods used in the surveillance of drinking water quality in the light of the special problems of small-community supplies, particularly in developing countries, and outlines the strategies necessary to ensure that surveillance is effective.
  principles of water quality control: Systems Analysis and Water Quality Management , 1972
  principles of water quality control: Principles of Water Quality Control Thomas Hugh Yelland Tebbutt, 1975
  principles of water quality control: Water Resource Management Issues Louis Theodore, R. Ryan Dupont, 2019-11-26 Drinking Water Safety: Basic Principles and Applications, examines the technical and scientific, as well as regulatory, ethical, and emerging issues of pollution prevention, sustainability, and optimization for the production and management of safe drinking water to cope with environmental pollution, population growth, increasing demand, terrorist threats, and climate change pressures. It presents a summary of conventional water and wastewater treatment technologies, in addition to the latest processes. Features include: Provides a summary of current and future of global water resources and availability. Summarizes key U.S. regulatory programs designed to ensure protection of water quality and safe drinking water supplies, with details on modern approaches for water utility resilience. Examines the latest water treatment technologies and processes, including separate chapters on evaporation, crystallization, nanotechnology, membrane-based processes, and innovative desalination approaches. Reviews the specialized literature on pollution prevention, sustainability, and the role of optimization in water treatment and related areas, as well as references for further reading. Provides illustrative examples and case studies that complement the text throughout, as well as an appendix with sections on units and conversion constants.
  principles of water quality control: Colloid and Interface Chemistry for Water Quality Control Qing Chang, 2016-05-11 Colloid and Interface Chemistry for Water Quality Control provides basic but essential knowledge of colloid and interface science for water and wastewater treatment. Divided into two sections, chapters 1 to 8 presents colloid chemistry including simple history and basic concepts, diffusion and Brown Motion, sedimentation, osmotic pressure, optical properties, rheology properties, electric properties, emulsion, foam and gel, and so on; chapters 9 to provides interface chemistry theories including the surface of liquid, the surface of solution, and the surface of solid. This valuable book is the only one that presents colloid and interface chemistry from the water quality control perspective. This book was written for graduate students in the area of water treatment and environmental engineering, and it could be used as the reference for researchers and engineers in the same area. - Concise content makes this suitable for both teaching and learning - Focuses on water treatment technology and methods, links colloid and surface chemistry to water treatment applications - Not only addresses all the important physical-chemistry principles and theories, but also presents new developed knowledge on water treatment - Includes exercises, problems and solutions, which are very helpful for testing learning and understanding
  principles of water quality control: Bioanalytical Tools in Water Quality Assessment Beate Isabella Escher, 2012
  principles of water quality control: Benefits of Water Quality Enhancement Syracuse University. Civil Engineering Department, Nelson L. Nemerow, 1971
  principles of water quality control: Water and Wastewater Engineering Mackenzie L. Davis, 2010-04-05 An In-Depth Guide to Water and Wastewater Engineering This authoritative volume offers comprehensive coverage of the design and construction of municipal water and wastewater facilities. The book addresses water treatment in detail, following the flow of water through the unit processes and coagulation, flocculation, softening, sedimentation, filtration, disinfection, and residuals management. Each stage of wastewater treatment--preliminary, secondary, and tertiary--is examined along with residuals management. Water and Wastewater Engineering contains more than 100 example problems, 500 end-of-chapter problems, and 300 illustrations. Safety issues and operation and maintenance procedures are also discussed in this definitive resource. Coverage includes: Intake structures and wells Chemical handling and storage Coagulation and flocculation Lime-soda and ion exchange softening Reverse osmosis and nanofiltration Sedimentation Granular and membrane filtration Disinfection and fluoridation Removal of specific constituents Drinking water plant residuals management, process selection, and integration Storage and distribution systems Wastewater collection and treatment design considerations Sanitary sewer design Headworks and preliminary treatment Primary treatment Wastewater microbiology Secondary treatment by suspended and attached growth biological processes Secondary settling, disinfection, and postaeration Tertiary treatment Wastewater plant residuals management Clean water plant process selection and integration
  principles of water quality control: Physicochemical Processes Walter J. Weber, 1972-07-14 This book is a comprehensive treatise on the principles and applications of chemical and physical-chemical methods of water and wastewater treatment.
  principles of water quality control: Quality Criteria for Water, 1986 United States. Environmental Protection Agency. Office of Water Regulations and Standards, 1986 Section 304(a) (1) of the Clean Water Act 33 U.S.C. 1314(a) (1) requires the Environmental Protection Agency (EPA) to publish and periodically update ambient water quality criteria. These criteria are to accurately reflect the latest scientific knowledge (a) on the kind and extent of all identifiable effects on health and welfare including, but not limited to, plankton, fish shellfish, wildlife, plant life, shorelines, beaches, aesthetics, and recreation which may be expected from the presence of pollutants in any body of water including ground water; (b) on the concentration and dispersal of pollutants, or their byproducts, through biological, physical, and chemical processes; and (c) on the effects of pollutants on biological community diversity, productivity, and stability, including information on the factors affecting rates of eutrophication and organic and inorganic sedimentation for varying types of receiving waters. In a continuing effort to provide those who use EPA's water quality and human health criteria with up-to-date criteria values and associated information, the document was assembled. The document includes summaries of all the contaminants for which EPA has developed criteria recommendations.
  principles of water quality control: Hydrology Martin P. Wanielista, Robert Kersten, Ron Eaglin, 1996-09-28 Complete, up-to-date coverage of the critical issues of water quality, emphasizing the illustration and application of both hydrologic and economic water management techniques. Using a fundamentals through applications approach, the book includes worked examples, case studies, and problems. Current methodologies, such as the use of a spreadsheet in hydrology and the use of the Internet in data collection are covered in this text.
  principles of water quality control: Technical Support Document for Water Quality-based Toxics Control , 1984
  principles of water quality control: A Compilation of Water Quality Goals Jon Bruce Marshack, California. Central Valley Regional Water Quality Control Board, 1989
  principles of water quality control: Industrial Water Quality W. Wesley Eckenfelder, Jr., Davis L. Ford, Andrew Englande, Jr., 2009 The Fourth Edition of Industrial Water Quality provides the technical methods, latest information, and current regulations necessary to conceive, design, and operate industrial pollution control facilities - either as an upgrade or as newly developed industrial complex. Advanced technologies are included as well as updated approaches to control, troubleshoot, and solve the complex issues of managing industrial wastewaters and residuals.--Jacket.
  principles of water quality control: Drinking Water: Principles And Practices Hans J C Van Dijk, Jasper Q J C Verberk, Peter J De Moel, 2006-11-24 This unique volume provides a comprehensive overview of all the major aspects of modern drinking water systems in the western European context. It not only covers the theoretical principles, but also the historical background and practical aspects of design and operation, legislation, planning and finance of drinking water supply in its social and economic context.The principles and practices are illustrated using experiences from The Netherlands. The Dutch drinking water supply is well known for its multiple barrier systems and high technical standards. The Dutch drinking water is of high quality and does not contain chlorine, and the Dutch therefore readily drink tap water and do not see the need to buy bottled water or in-house filters, with their drawbacks on national economics, public health and the environment. This illustrative overview can be used as a reference for other countries and regions.
  principles of water quality control: Water Quality J. Kevin Summers, 2020-07-29 Water Quality – Science, Assessments and Policy examines many of the scientific issues; national, regional and local assessment practices and results; and national policy issues related to water quality. Chapters focus on three areas: water quality parameters, water quality treatments, and water quality assessments. This book provides a basic understanding of water quality issues and practical examples of their solution.
  principles of water quality control: Principles of Surface Water Quality Modeling and Control Robert V. Thomann, John A. Mueller, 1987 This book teaches the fundamentals and principles which underlie the mathematical modeling techniques used to analyze the quality of surface waters. The text first provides an overview of the different bodies of water in which water quality problems need to be addressed before examining specific problems that occur across all bodies of water.
  principles of water quality control: Principles of Water Resources Thomas V. Cech, 2009-08-24 With all new and updated material, the third edition provides civil engineers with a complete history of water availability. It also delves into government development, management, and policy of water usage. New information is included on international water issues, water measurement, and telemetry. Additional details are also presented on global warming and its impact on water resources. In addition, environmental engineers will gain a current understanding of the field through updated case studies and images that make the material more relevant.
  principles of water quality control: Assessment of Treatment Plant Performance and Water Quality Data Marcos Von|Verbyla Sperling (Matthew E.|Oliveira, Silvia M. A. C.), 2020
  principles of water quality control: Water Pollution Control Richard Helmer, Ivanildo Hespanhol, 2017-10-02 This is a handbook for policy makers and environmental managers in water authorities and engineering companies engaged in water quality programmes, especially in developing countries. It is also suitable for use as a textbook or as training material.
  principles of water quality control: The Economics of Water Georg Meran, Markus Siehlow, Christian von Hirschhausen, 2020-09-04 This open access textbook provides a concise introduction to economic approaches and mathematical methods for the study of water allocation and distribution problems. Written in an accessible and straightforward style, it discusses and analyzes central issues in integrated water resource management, water tariffs, water markets, and transboundary water management. By illustrating the interplay between the hydrological cycle and the rules and institutions that govern today’s water allocation policies, the authors develop a modern perspective on water management. Moreover, the book presents an in-depth assessment of the political and ethical dimensions of water management and its institutional embeddedness, by discussing distribution issues and issues of the enforceability of human rights in managing water resources. Given its scope, the book will appeal to advanced undergraduate and graduate students of economics and engineering, as well as practitioners in the water sector, seeking a deeper understanding of economic approaches to the study of water management.
  principles of water quality control: Biological Waste Treatment W. W. Eckenfelder, D. J. O'Connor, 2013-09-11 Biological Waste Treatment is the outgrowth of a course entitled Bio-oxidation of Organic Wastes—Theory and Design initiated at Manhattan College in 1955. The objective of the course was to present the fundamentals of bio-oxidation which would serve as a framework for the analysis, design, and operation of biological waste treatment facilities. This book reflects the authors' approach to the solution of waste treatment problems. It is intended as an engineering text that applies the principles of physics, chemistry, and biology of waste treatment to the design and operation of waste treatment facilities. The book begins with discussions of the pollutional characteristics of waste waters, the strength and flow of waste, waste treatment processes, and biochemical oxygen demand. Subsequent chapters cover the principles of biological oxidation, the theory and practice of aeration, stream and estuary analysis, and solid-liquid separation. The final chapters deal with aerobic and anaerobic biological treatment processes and sludge handling and disposal. Although this text is primarily intended to serve as a guide for the practicing engineer, it should also serve as a useful reference for graduate students in sanitary engineering.
  principles of water quality control: Principles of Water Quality Control (revised and enlarged). Tebbutt THY., 1983
  principles of water quality control: Water Quality Criteria and Standards Plan , 1998
  principles of water quality control: Water Quality Claude E. Boyd, 2012-12-06 Water quality is important to everyone, but professionals in many disciplines need an understanding of this subject. Although water quality is complex, its general aspects can be grasped readily and with little background - only introductory chemistry and biology and a little algebra are needed. Unfortunately, the teaching of water quality is not well organized. In most colleges and universities, water quality instruction is given in certain engineering curricula and in aquatic ecology or fisheries curricula. There also is brief attention to selected topics on water quality in numerous classes in other curricula. Water quality training in engineering is highly specialized and directed by necessity towards water supply and water treatment, while the focus in aquatic ecology and fisheries is on biological water quality and pollution. Few students venture into specialized classes outside of their curricula, and as a result, their formal training in water quality is greatly restricted. Self-education by reading texts and reference books on water quality is difficult. Authors of water quality books seem to be more interested in presenting a rigorous, detailed treatment than in focusing on simplicity and clarity. Chemical aspects of water quality often are presented at a level requiring fairly advanced mathematics and physical chemistry, and biological discussions may be quite advanced and theoretical. I have taught water quality to seniors and graduate students in agriculture, wildlife and fisheries, environmental sciences, economics, and similar disciplines for many years.
  principles of water quality control: River Water Quality Monitoring Larry W. Canter, 2018-01-17 The purpose of this book is to present practical information on the planning and conduction of river water quality monitoring studies.
  principles of water quality control: Why Startups Fail Tom Eisenmann, 2021-03-30 If you want your startup to succeed, you need to understand why startups fail. “Whether you’re a first-time founder or looking to bring innovation into a corporate environment, Why Startups Fail is essential reading.”—Eric Ries, founder and CEO, LTSE, and New York Times bestselling author of The Lean Startup and The Startup Way Why do startups fail? That question caught Harvard Business School professor Tom Eisenmann by surprise when he realized he couldn’t answer it. So he launched a multiyear research project to find out. In Why Startups Fail, Eisenmann reveals his findings: six distinct patterns that account for the vast majority of startup failures. • Bad Bedfellows. Startup success is thought to rest largely on the founder’s talents and instincts. But the wrong team, investors, or partners can sink a venture just as quickly. • False Starts. In following the oft-cited advice to “fail fast” and to “launch before you’re ready,” founders risk wasting time and capital on the wrong solutions. • False Promises. Success with early adopters can be misleading and give founders unwarranted confidence to expand. • Speed Traps. Despite the pressure to “get big fast,” hypergrowth can spell disaster for even the most promising ventures. • Help Wanted. Rapidly scaling startups need lots of capital and talent, but they can make mistakes that leave them suddenly in short supply of both. • Cascading Miracles. Silicon Valley exhorts entrepreneurs to dream big. But the bigger the vision, the more things that can go wrong. Drawing on fascinating stories of ventures that failed to fulfill their early promise—from a home-furnishings retailer to a concierge dog-walking service, from a dating app to the inventor of a sophisticated social robot, from a fashion brand to a startup deploying a vast network of charging stations for electric vehicles—Eisenmann offers frameworks for detecting when a venture is vulnerable to these patterns, along with a wealth of strategies and tactics for avoiding them. A must-read for founders at any stage of their entrepreneurial journey, Why Startups Fail is not merely a guide to preventing failure but also a roadmap charting the path to startup success.
  principles of water quality control: Principles of Stormwater Management Roger D. Griffin, 2018-04-09 This book presents of all aspects of storm water management: the hydrologic cycle, sources of contaminants, standards applicable to discharges, regulatory issues, atmospheric deposition, best management practices, and health/environmental impacts. It includes technical details of the modern treatment of stormwater, the emerging issues of atmospheric deposition, run-on, and snow melt, the Epidemiologic Model, and field data on discharge concentrations of a variety of contaminants. The principles explained in this book will enable students, contractors, developers, and engineers to grasp the most important field elements which must be included for construction projects impacting stormwater.
  principles of water quality control: Aeration James Mueller, William C. Boyle, Ing. H. Johannes Popel, 2002-02-27 The immense environmental challenges facing the world now and in years to come can only be met through marshalling the talents of the best environmental engineers and scientists, and through the use of innovative, cost-effective solutions. Written by three leading aeration experts, Aeration: Principles and Practice, covers the principles and practi
  principles of water quality control: Soil and Water Quality National Research Council, Board on Agriculture, Committee on Long-Range Soil and Water Conservation Policy, 1993-02-01 How can the United States meet demands for agricultural production while solving the broader range of environmental problems attributed to farming practices? National policymakers who try to answer this question confront difficult trade-offs. This book offers four specific strategies that can serve as the basis for a national policy to protect soil and water quality while maintaining U.S. agricultural productivity and competitiveness. Timely and comprehensive, the volume has important implications for the Clean Air Act and the 1995 farm bill. Advocating a systems approach, the committee recommends specific farm practices and new approaches to prevention of soil degradation and water pollution for environmental agencies. The volume details methods of evaluating soil management systems and offers a wealth of information on improved management of nitrogen, phosphorus, manure, pesticides, sediments, salt, and trace elements. Landscape analysis of nonpoint source pollution is also detailed. Drawing together research findings, survey results, and case examples, the volume will be of interest to federal, state, and local policymakers; state and local environmental and agricultural officials and other environmental and agricultural specialists; scientists involved in soil and water issues; researchers; and agricultural producers.
  principles of water quality control: Drinking Water Quality N. F. Gray, 2008-04-03 This textbook provides a comprehensive review of the problems associated with the supply of drinking water in the developed world. Since the first edition of this book was published, water companies and regulators have been presented with numerous new challenges - global warming has seriously affected water supplies and water quality; advances in chemical and microbial analysis have revealed many new contaminants in water that were previously undetectable; and recent terrorist attacks have demonstrated how vulnerable water supplies are to contamination or disruption. This new edition includes an overview of the current and emerging problems, with potential solutions. It has been completely updated, and includes the WHO Revised Drinking Water Guidelines. An ideal textbook for courses in environmental science, hydrology, environmental health and environmental engineering; it also provides an authoritative reference for practitioners and professionals in the water supply industry.
  principles of water quality control: Adaptive Water Management Farideh Delavari Edalat, M. Reza Abdi, 2018-08-22 This book explores a new framework of Adaptive Water Management (AWM) for evaluating existing approaches in urban water management. It highlights the need to adopt multidisciplinary strategies in water management while providing an in-depth understanding of institutional interactions amongst different water related sectors. The key characteristics of AWM i.e. polycentric governance, organisational flexibility and public participation are investigated and described through a critical review of the relevant literature. The book presents an empirical case study undertaken in a selected developing-country city to investigate the potential gaps between the current water management approaches and possible implementation of AWM. Feasibility of AWM operations is examined in an environment surrounded by established water management structure with centralised governance and an institutional process based on technical flexibility. The key elements of AWM performance are (re)structured and transformed into decision support systems. Multi criteria decision models are developed to facilitate quantification and visualization of the elements derived from the case study, which is involved with water companies and water consumers. The book describes how the concept of AWM, along with structuring suitable decision support systems, can be developed and applied to developing-country cities. The book highlights the barriers for applying the AWM strategies that include established centralised decision making, bureaucratic interactions with external organisations, lack of organisational flexibility within the institutions, and lack of recognition of public role in water management. The findings outline that despite the lack of adaptability in the current water management in the case study, as an example of developing countries, there are positive attitudes among water professionals and the public towards adaptability through public-institutional participation.
PRINCIPLE Definition & Meaning - Merriam-Webster
a comprehensive and fundamental law, doctrine, or assumption; a rule or code of conduct; habitual devotion to right principles… See the full definition

Principles by Ray Dalio
Ray Dalio, one of the world’s most successful investors and entrepreneurs, shares the unconventional principles that helped him create unique results in life and business.

Principle - Definition, Meaning & Synonyms | Vocabulary.com
A principle is a kind of rule, belief, or idea that guides you. You can also say a good, ethical person has a lot of principles.

PRINCIPLE | English meaning - Cambridge Dictionary
Principal as an adjective means ‘most important’: … [ C ] His guiding principle is that everyone should have equal access to high-quality health care. [ C ] He refused to compromise his …

Principle - Wikipedia
There are many principles observed in physics, notably in cosmology which observes the mediocrity principle, the anthropic principle, the principle of relativity and the cosmological …

PRINCIPLE Definition & Meaning | Dictionary.com
Principle, canon, rule imply something established as a standard or test, for measuring, regulating, or guiding conduct or practice. A principle is a general and fundamental truth that …

PRINCIPLE definition and meaning | Collins English Dictionary
A principle is a general belief that you have about the way you should behave, which influences your behaviour. Buck never allowed himself to be bullied into doing anything that went against …

principle noun - Definition, pictures, pronunciation and usage …
Definition of principle noun from the Oxford Advanced Learner's Dictionary. [countable, usually plural, uncountable] a moral rule or a strong belief that influences your actions. He has high …

Principle Definition & Meaning | Britannica Dictionary
In principle, making the changes should be a simple matter, but there may be problems we haven't thought of. They accepted the offer in principle. Do not confuse principle with principal.

Principle Definition & Meaning - YourDictionary
Principle definition: A basic truth, law, or assumption.

PRINCIPLE Definition & Meaning - Merriam-Webster
a comprehensive and fundamental law, doctrine, or assumption; a rule or code of conduct; habitual devotion to right principles… See the full definition

Principles by Ray Dalio
Ray Dalio, one of the world’s most successful investors and entrepreneurs, shares the unconventional principles that helped him create unique results in life and business.

Principle - Definition, Meaning & Synonyms | Vocabulary.com
A principle is a kind of rule, belief, or idea that guides you. You can also say a good, ethical person has a lot of principles.

PRINCIPLE | English meaning - Cambridge Dictionary
Principal as an adjective means ‘most important’: … [ C ] His guiding principle is that everyone should have equal access to high-quality health care. [ C ] He refused to compromise his …

Principle - Wikipedia
There are many principles observed in physics, notably in cosmology which observes the mediocrity principle, the anthropic principle, the principle of relativity and the cosmological …

PRINCIPLE Definition & Meaning | Dictionary.com
Principle, canon, rule imply something established as a standard or test, for measuring, regulating, or guiding conduct or practice. A principle is a general and fundamental truth that …

PRINCIPLE definition and meaning | Collins English Dictionary
A principle is a general belief that you have about the way you should behave, which influences your behaviour. Buck never allowed himself to be bullied into doing anything that went against …

principle noun - Definition, pictures, pronunciation and usage …
Definition of principle noun from the Oxford Advanced Learner's Dictionary. [countable, usually plural, uncountable] a moral rule or a strong belief that influences your actions. He has high …

Principle Definition & Meaning | Britannica Dictionary
In principle, making the changes should be a simple matter, but there may be problems we haven't thought of. They accepted the offer in principle. Do not confuse principle with principal.

Principle Definition & Meaning - YourDictionary
Principle definition: A basic truth, law, or assumption.