Theories are analytical tools for understanding, explaining, and making predictions about a given subject matter. There are theories in many and varied fields of study, including the arts and sciences.

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Because of the rigors of experimentation and control, it is understood to be more likely to be true than a hypothesis is. In non-scientific use, however, hypothesis and theory are often used interchangeably …

In science, an explanation or model that covers a substantial group of occurrences in nature and has been confirmed by a substantial number of experiments and observations. A theory is more general …

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

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.

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.

Mar 25, 2024 · Theory is a systematic explanation of phenomena based on observation, experimentation, and reasoning. It provides a framework for understanding complex concepts and …

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.

Jan 20, 2026 · Scientists and creationists are understanding the word "theory" in two very different senses. Evolution is a theory in the same sense as the heliocentric theory.