Meaning of the word theory in English
What does theory mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.
theory
US /ˈθɪr.i/
UK /ˈθɪr.i/

Noun
1.
a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
Example:
•
The scientist proposed a new theory about the origin of the universe.
•
His theory on human behavior is widely accepted.
2.
a set of principles on which the practice of an activity is based.
Example:
•
He studied music theory for many years.
•
The course covers both the theory and practice of teaching.
3.
an idea used to account for a situation or justify a course of action.
Example:
•
My theory is that he's trying to avoid us.
•
It's just a theory, but it makes sense.
Learn This Word at Lingoland