a supposition or a system of ideas intended to explain something
The theory is interesting.
He proposed a new theory.
Theory and practice are different.
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scientific theory
economic theory
theory of relativity
hypothesis
concept
idea
Based on or serving as a hypothesis.
The scientist presented a theory to explain the phenomenon.
She proposed a theory about human behavior.
The new theory challenged existing beliefs.
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scientific theory
conspiracy theory
evolutionary theory
hypothesis
idea
concept