How do you pronounce "asteroid"?

In American English: /ˈæstɝˌɔɪd/ (AST-ur-oyd). In British English: /ˈæstəɹˌɔɪd/ (AST-uhr-oyd). In Canadian English: /ˈæstɝˌɔɪd/ (AST-ur-oyd). In Australian English: /ˈastəɹˌɔɪd/ (AST-uhr).

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

Yes. In American English it's pronounced /ˈæstɝˌɔɪd/ (AST-ur-oyd), while in British English it's /ˈæstəɹˌɔɪd/ (AST-uhr-oyd).

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asteroid

regional

/ˈæstɝˌɔɪd/

AST-ur-oyd

Syllable Breakdown

æstas·ɝter·ɔɪdoid

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-12