How do you pronounce "serum"?

In American English: /ˈsɪrəm/ (SIR-uhm). In British English: /sˈɪəɹəm/ (S-i-uhr). In Canadian English: /ˈsɪrəm/ (SIR-uhm). In Australian English: /sˈɛɹəm/ (S-ehr).

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

Yes. In American English it's pronounced /ˈsɪrəm/ (SIR-uhm), while in British English it's /sˈɪəɹəm/ (S-i-uhr).

How to Pronounce "serum"

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serum

regional

/ˈsɪrəm/

SIR-uhm

Syllable Breakdown

sɪrse·əmrum

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14