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  1. THEORY Definition & Meaning - Merriam-Webster

    The meaning of THEORY is a scientifically acceptable or plausible general principle or body of principles based on data and offered to explain phenomena. How to use theory in a sentence.

  2. Theory - Wikipedia

    In modern science, the term "theory" refers to scientific theories, a well-confirmed type of explanation of nature, made in a way consistent with the scientific method, and fulfilling the …

  3. THEORY Definition & Meaning | Dictionary.com

    THEORY definition: a coherent group of tested general propositions, commonly regarded as correct, that can be used as principles of explanation and prediction for a class of phenomena. …

  4. THEORY | English meaning - Cambridge Dictionary

    THEORY definition: 1. a formal statement of the rules on which a subject of study is based or of ideas that are…. Learn more.

  5. Theory Definition & Meaning | Britannica Dictionary

    THEORY meaning: 1 : an idea or set of ideas that is intended to explain facts or events; 2 : an idea that is suggested or presented as possibly true but that is not known or proven to be true

  6. theory noun - Definition, pictures, pronunciation and usage …

    Definition of theory noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  7. Theory - definition of theory by The Free Dictionary

    The branch of a science or art consisting of its explanatory statements, accepted principles, and methods of analysis, as opposed to practice: a fine musician who had never studied theory.

  8. THEORY definition and meaning | Collins English Dictionary

    A theory is a formal idea or set of ideas that is intended to explain something. Marx produced a new theory about historical change based upon conflict.

  9. Definition of "theory" - Words Defined

    Definition of "theory" A supposition or a system of ideas intended to explain something, typically based on general principles independent of the thing to be explained.

  10. theory, n. meanings, etymology and more | Oxford English Dictionary

    There are nine meanings listed in OED's entry for the noun theory, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence. theory has …