theory Definition in the Cambridge Learner’s Dictionary Cambridge dictionaries logo

Definition of “theory” - Learner’s Dictionary

theory

noun     /ˈθɪəri/
IDEA [C] B2 an idea or set of ideas that is intended to explain something: Darwin's theory of evolutionPhilosophyIdeas, concepts and theories
PRINCIPLES [U] the set of principles on which a subject is based: economic theoryPhilosophyIdeas, concepts and theories
in theory B2 If something is possible in theory, it should be possible but often it does not happen this way: In theory, the journey should be shorter but in practice, the roadworks slow you down.Ideas, concepts and theories
Translations of “theory”
in Arabic نَظَرِيّة…
in Korean 이론…
in Malaysian teori…
in French théorie…
in Turkish kuram, teori…
in Italian teoria…
in Chinese (Traditional) 理論, 學說, 意見…
in Russian теория…
in Polish teoria…
in Vietnamese lý thuyết, lý luận, nguyên lý…
in Spanish teoría…
in Portuguese teoria…
in Thai สมมติฐาน, ทฤษฎี…
in German die Theorie…
in Catalan teoria…
in Japanese 理論, 説…
in Indonesian teori…
in Chinese (Simplified) 理论, 学说, 意见…
(Definition of theory from the Cambridge Learners Dictionary © Cambridge University Press)
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