How do you pronounce "protein"?

In American English: /ˈproʊˌtiːn/ (PROH-teen). In British English: /pɹˈəʊtˌiːn/ (PR-oht). In Canadian English: /ˈproʊˌtiːn/ (PROH-teen). In Australian English: /pɹˈəʊtiːn/ (PR-oht).

Is "protein" pronounced differently in American and British English?

Yes. In American English it's pronounced /ˈproʊˌtiːn/ (PROH-teen), while in British English it's /pɹˈəʊtˌiːn/ (PR-oht).

How to Pronounce "protein"

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protein

regional

/ˈproʊˌtiːn/

PROH-teen

Syllable Breakdown

proʊpro·tiːntein

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14