theory Definition and Meaning in English (theory definition)
nounTheory definition: A well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment.
Definitions of Theory
- 1noun(formal)
A well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment.
- 2noun
A set of principles on which the practice of an activity is based.
- 3noun
An idea used to account for a situation or justify a course of action.
Example Sentences
“The theory of relativity changed our understanding of the universe.”
“Her theory about the missing keys turned out to be correct.”
“In theory, this plan should work perfectly.”
Topics & Categories
Topic & ExploreInflected Word Forms
Phrases & Idiomatic Expressions
Used to say that something is supposed to be true or to happen, but that it might not in reality.
A theory that attempts to explain a wide range of phenomena.
Frequently Asked Questions: Theory in English
What is the meaning of Theory in English?▼
How do you translate 'Theory' to English?▼
How do you pronounce 'Theory' and 'theory'?▼
Related Words in Science Basics
Explore contextually related English vocabulary with verified English meanings, pronunciations, and sentence usages: