bilabial
US /ˌbaɪˈleɪ.bi.əl/
UK /ˌbaɪˈleɪ.bi.əl/
1.
a consonant sound produced by pressing the lips together, such as /p/, /b/, or /m/
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The sounds /p/, /b/, and /m/ are all bilabial consonants.
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When you say 'mama', the 'm' sound is a bilabial nasal.
1.
a bilabial consonant sound
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The phonetics student was able to identify all the bilabials in the sentence.
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Many languages have a wide range of bilabials.