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ˈθiːəri
Meaning & Definition
noun
A supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
The theory of evolution explains the diversity of life on Earth.
A set of principles on which the practice of an activity is based.
In music theory, we study the structure and fundamentals of music.
A conjecture or speculation.
She has a theory that the missing keys were taken by her younger brother.
An abstract reasoning; speculation.
The theory is that time travel could one day be possible.
A belief or opinion based on conjecture rather than knowledge.
His theory about the stock market is not backed by any empirical data.
Etymology
From Greek 'theoria' meaning 'contemplation, speculation.'
Common Phrases and Expressions
grand theory:
A theory that attempts to explain a broad range of phenomena.
theory of everything:
A theoretical framework that aims to explain all fundamental forces and aspects of the universe.
out of theory:
To apply theoretical knowledge to practical situations.
Related Words
Slang Meanings
Conspiracy theory
He thinks the moon landing was a conspiracy theory.
Theory crafting
In gaming, theory crafting involves developing strategies based on game mechanics.