D defs.my
Entry 1 sense Webster, 1913

Semitone

· Sem·i·tone · IPA /ˈsɛmitoʊn/
01 n. Half a tone; -- the name commonly applied to the smaller intervals of the diatonic scale.
  1. 1.
    Half a tone; -- the name commonly applied to the smaller intervals of the diatonic scale.(Mus.)