Definition of Theory in English :

Define Theory in English

Theory meaning in English

Meaning of Theory in English

Pronunciation of Theory in English

Theory pronunciation in English

Pronounce Theory in English

Theory

see synonyms of theory

Noun

1. theory

a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena

Example Sentences:
'theories can incorporate facts and laws and tested hypotheses'
'true in fact and theory'

2. hypothesis, possibility, theory

a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena

Example Sentences:
'a scientific hypothesis that survives experimental testing becomes a scientific theory'
'he proposed a fresh theory of alkalis that later was accepted in chemical practices'

3. theory

a belief that can guide behavior

Example Sentences:
'the architect has a theory that more is less'
'they killed him on the theory that dead men tell no tales'

WordNet Lexical Database for English. Princeton University. 2010.


Theory

see synonyms of theory
noun plural -ries
1. 
a system of rules, procedures, and assumptions used to produce a result
2. 
abstract knowledge or reasoning
3. 
a speculative or conjectural view or idea
I have a theory about that
4. 
an ideal or hypothetical situation (esp in the phrase in theory)
5. 
a set of hypotheses related by logical or mathematical arguments to explain and predict a wide variety of connected phenomena in general terms
the theory of relativity
6.  a nontechnical name for hypothesis (sense 1)

Collins English Dictionary. Copyright © HarperCollins Publishers


Theory

see synonyms of theory
nounWord forms: plural ˈtheories
1.  Obsolete
a mental viewing; contemplation
2. 
a speculative idea or plan as to how something might be done
3. 
a systematic statement of principles involved
the theory of equations in mathematics
4. 
a formulation of apparent relationships or underlying principles of certain observed phenomena which has been verified to some degree
5. 
that branch of an art or science consisting in a knowledge of its principles and methods rather than in its practice; pure, as opposed to applied, science, etc.
6.  Popularly
a mere conjecture, or guess

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


Theory

see synonyms of theory
n. pl. the·o·ries
1. A set of statements or principles devised to explain a group of facts or phenomena, especially one that has been repeatedly tested or is widely accepted and can be used to make predictions about natural phenomena.
2. The branch of a science or art consisting of its explanatory statements, accepted principles, and methods of analysis, as opposed to practice: a fine musician who had never studied theory.
3. A set of theorems that constitute a systematic view of a branch of mathematics.
4. Abstract reasoning; speculation: a decision based on experience rather than theory.
5. A belief or principle that guides action or assists comprehension or judgment: staked out the house on the theory that criminals usually return to the scene of the crime.
6. An assumption based on limited information or knowledge; a conjecture.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.