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 …

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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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

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

theory, n. meanings, etymology, pronunciation and more in the Oxford 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.

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In science, a broad, natural explanation for a wide range of phenomena. Theories are concise, coherent, systematic, predictive, and broadly applicable, often integrating and generalizing many hypotheses.

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.