Jisho

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Noun, Suru verb
1. labializationLinguistics, See also 円唇化
Wikipedia definition
2. Labialization"Lip rounding" redirects here. See Roundedness for the lip rounding of vowels. Labialization is a secondary articulatory feature of sounds in some languages. Labialized sounds involve the lips while the remainder of the oral cavity produces another sound. The term is normally restricted to consonants. When vowels involve the lips, they are called rounded. The most common labialized consonants are labialized velars.
Read “Labialization” on English Wikipedia
Read “唇音化” on Japanese Wikipedia
Read “Labialization” on DBpedia

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