How do you pronounce "isothermal"?

In American English: /ˌaɪsəˈθɝːməl/ (eyes-uh-THURM-uhl). In British English: /ˌaɪsəðˈɜːməl/ (eyes-uhth-ꞫM-uhl). In Canadian English: /ˌʌɪsəˈθɝːməl/ (uh-is-uh-THURM-uhl). In Australian English: /ˌaɪsəðˈɜːməl/ (eyes-uhth-ꞫM-uhl).

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

Yes. In American English it's pronounced /ˌaɪsəˈθɝːməl/ (eyes-uh-THURM-uhl), while in British English it's /ˌaɪsəðˈɜːməl/ (eyes-uhth-ꞫM-uhl).

How to Pronounce "isothermal"

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isothermal

regional

/ˌaɪsəˈθɝːməl/

eyes-uh-THURM-uhl

Syllable Breakdown

aɪsiso·əth·θɝːmer·əlmal

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14