How do you pronounce "combustion"?

In American English: /kəmˈbʌstʃən/ (kuhm-BUHSCH-uhn). In British English: /kəmbˈʌstʃən/ (kuhmb-UHSCH-uhn). In Canadian English: /kəmˈbʌstʃən/ (kuhm-BUHSCH-uhn). In Australian English: /kəmbˈʌstʃən/ (kuhmb-UHSCH-uhn).

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

Yes. In American English it's pronounced /kəmˈbʌstʃən/ (kuhm-BUHSCH-uhn), while in British English it's /kəmbˈʌstʃən/ (kuhmb-UHSCH-uhn).

How to Pronounce "combustion"

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combustion

disputed

/kəmˈbʌstʃən/

kuhm-BUHSCH-uhn

Syllable Breakdown

kəmcom·bʌstʃbus·əntion

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14