Home
Random
Log in
Settings
Donate Now
If this site has been useful to you, please give today.
About Wiktionary
Disclaimers
Search
theory
Language
Watch
Edit
theory
is on the Academic Word List.
Pronunciation
change
(
UK
)
IPA
(
key
)
:
/ˈθɪəri/
or
/ˈθiːəri/
or
/ˈθɪri/
(
US
)
IPA
(
key
)
:
/ˈθiːəri/
or
/ˈθɪri/
Audio (US)
(
file
)
Noun
change
Singular
theory
Plural
theories
Theory
is on the
Academic Vocabulary List
.
(
countable
)
A
theory
is an idea that tries to
explain
an
observation
.
The new information showed that his
theory
about growth was incorrect.
Nobody has disproved Einstein's
theory
of general relativity.
Related words
change
theorist