noun, noun which may take the genitive case particle 'no'
lip rounding; rounded
Linguistics term referring to the rounding of the lips during articulation, especially for vowels. Often used in phrases like 円唇母音 (rounded vowel).
'U' is one of the rounded vowels.
The degree of lip rounding differs from language to language.
labialization
unrounded
rounded vowel
Compound of 円 (round) and 唇 (lips), directly describing the rounded shape of the lips in articulation.