Definition of “postulate” - English Dictionary

“postulate” in British English

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postulateverb [ I or T ]

uk /ˈpɒs.tʃə.leɪt/ us /ˈpɑːs.tʃə.leɪt/ formal

to suggest a theory, idea, etc. as a basic principle from which a further idea is formed or developed:

[ + that ] It was the Greek astronomer, Ptolemy, who postulated that the earth was at the centre of the universe.

postulatenoun [ C ]

uk /ˈpɒs.tʃə.lət/ us /ˈpɑːs.tʃə.lət/ formal

an idea that is suggested or accepted as a basic principle before a further idea is formed or developed from it

(Definition of “postulate” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“postulate” in American English

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postulateverb [ T ]

us /ˈpɑs·tʃəˌleɪt/ fml

to suggest or accept that a theory or idea is true as a starting point for reasoning or discussion:

[ + that clause ] Astronomers postulate that the comet will reappear in 4000 years.
postulate
noun [ C ] us /ˈpɑs·tʃə·lɪt, -ˌleɪt/

fml

He suggested an original and interesting postulate.

(Definition of “postulate” from the Cambridge Academic Content Dictionary © Cambridge University Press)

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