How do you pronounce "radiation"?

In American English: /ˌreɪdiːˈeɪʃən/ (rayd-ee-AYSH-uhn). In British English: /ɹˌeɪdɪˈeɪʃən/ (r-ayd-I-aysh). In Canadian English: /ˌreɪdiːˈeɪʃən/ (rayd-ee-AYSH-uhn). In Australian English: /ɹˌeɪdɪˈeɪʃən/ (r-ayd-I-aysh).

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

Yes. In American English it's pronounced /ˌreɪdiːˈeɪʃən/ (rayd-ee-AYSH-uhn), while in British English it's /ɹˌeɪdɪˈeɪʃən/ (r-ayd-I-aysh).

How to Pronounce "radiation"

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radiation

regional

/ˌreɪdiːˈeɪʃən/

rayd-ee-AYSH-uhn

Syllable Breakdown

reɪdra·iːdi·eɪʃa·əntion

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14