from The Century Dictionary and Cyclopedia
- Impure: applied in Japanese to certain sounds (g, z. j, d, b, and p) which are substituted in certain circumstances for the pure sounds k, s, sh (or ch), t, h, or f.
- n. The substitution of an impure consonantal sound for a pure one when it begins the second part of a compound, or the second part of a plural expression formed by reduplication, as in kami-dana (which see) for kami-tana, ‘god-shelf’; kawa-guchi for kawa-kuchi, ‘river-mouth’; ban-zai (which see) for ban-sai, ‘ten thousand years’; kanagawa for kana-kawa (name of the prefecture in which Yokohama is situated); hito-bito, ‘men,’ for hito-hito, from hito, ‘man,’ etc.
- n. In Japanese writing and printing, the mark (earlier ), placed at the right of a pure consonant to show that it has become impure.
Sorry, no etymologies found.