Definition of “vowel” - English Dictionary

british dictionary

“vowel” in British English

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vowelnoun [ C ]

uk /vaʊəl/ us /vaʊəl/

B1 a speech sound produced by humans when the breath flows out through the mouth without being blocked by the teeth, tongue, or lips:

A short vowel is a short sound as in the word "cup".
A long vowel is a long sound as in the word "shoe".
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B1 a letter that represents a sound produced in this way:

The vowels in English are a, e, i, o, and u.

(Definition of “vowel” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“vowel” in American English

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vowelnoun [ C ]

us /ˈvɑʊ·əl/

writing a speech sound produced by human beings when the breath flows out through the mouth without being blocked by the teeth, tongue, or lips

writing A vowel is also a letter that represents a sound produced in this way:

The vowels in English are a, e, i, o, u, and sometimes y.

(Definition of “vowel” from the Cambridge Academic Content Dictionary © Cambridge University Press)