How do you pronounce "infinitesimal"?

In American English: /ˌɪnfɪnɪˈtɛsɪməl/ (inf-in-i-TEHS-im-uhl). In British English: /ˈɪnfɪnətˌɛsɪməl/ (INF-in-uht-ehs-im-uhl). In Canadian English: /ˌɪnfɪnɪˈtɛsɪməl/ (inf-in-i-TEHS-im-uhl). In Australian English: /ˈɪnfɪnətˌɛsɪməl/ (INF-in-uht-ehs-im-uhl).

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

Yes. In American English it's pronounced /ˌɪnfɪnɪˈtɛsɪməl/ (inf-in-i-TEHS-im-uhl), while in British English it's /ˈɪnfɪnətˌɛsɪməl/ (INF-in-uht-ehs-im-uhl).

How to Pronounce "infinitesimal"

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infinitesimal

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/ˌɪnfɪnɪˈtɛsɪməl/

inf-in-i-TEHS-im-uhl

Syllable Breakdown

ɪnfin·ɪnfin·ɪi·tɛstes·ɪmi·əlmal

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14