How do you pronounce "dioxide"?

In American English: /daɪˈɑːkˌsaɪd/ (deye-AHK-seyed). In British English: /daɪˈɒksˌaɪd/ (deye-OKS-eyed). In Canadian English: /daɪˈɑːkˌsaɪd/ (deye-AHK-seyed). In Australian English: /daɪˈɒksaɪd/ (deye-OKS-eyed).

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

Yes. In American English it's pronounced /daɪˈɑːkˌsaɪd/ (deye-AHK-seyed), while in British English it's /daɪˈɒksˌaɪd/ (deye-OKS-eyed).

How to Pronounce "dioxide"

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dioxide

regional

/daɪˈɑːkˌsaɪd/

deye-AHK-seyed

Syllable Breakdown

daɪdi·ɑːkox·saɪdide

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14