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Wapan or Jukun Wapan, also known as Wukari after the local town, is a major Jukunoid language of Nigeria. Wapan and other Jukunoid languages are interesting in the development of asymmetrical patterns of nasal and oral consonants in West Africa, where one could posit that voiced oral stops become nasal before nasal vowels, sometimes at the expense of having more nasal than oral vowels (which is typologically odd), or that nasal stops denasalize before oral vowels, which is also typologically odd. In Wapan, the asymmetry is as follows: Oral vowels are only allowed in syllables like ''ba, mba'' and nasal vowels in ''bã, mã''. Historically, however, the consonants nasalized: *mb became * *mm before nasal vowels, and then reduced to *m, leaving the current asymmetric distribution.〔Larry Hyman, 1975. "Nasal states and nasal processes." In ''Nasalfest: Papers from a Symposium on Nasals and Nasalization,'' pp. 249–264〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Wapan language」の詳細全文を読む スポンサード リンク
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