Definition of “protein” - English Dictionary

british dictionary

“protein” in British English

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proteinnoun [ C or U ]

uk /ˈprəʊ.tiːn/ us /ˈproʊ.tiːn/

C1 one of the many substances found in food such as meat, cheese, fish, or eggs, that is necessary for the body to grow and be strong

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

“protein” in American English

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proteinnoun [ C/U ]

us /ˈproʊ·tin/

biology any of a large group of chemicals that are a necessary part of the cells of all living things

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