How do you pronounce "ammonium"?

In American English: /əˈmoʊniːəm/ (uh-MOHN-ee-uhm). In British English: /amˈəʊniəm/ (AM-ohn-ee). In Canadian English: /əˈmoʊniːəm/ (uh-MOHN-ee-uhm). In Australian English: /amˈəʊniəm/ (AM-ohn-ee).

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

Yes. In American English it's pronounced /əˈmoʊniːəm/ (uh-MOHN-ee-uhm), while in British English it's /amˈəʊniəm/ (AM-ohn-ee).

How to Pronounce "ammonium"

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ammonium

regional

/əˈmoʊniːəm/

uh-MOHN-ee-uhm

Syllable Breakdown

əam·moʊnmo·iːni·əmum

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14