microtone

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mi·cro·tone

M0278200 (mī′krə-tōn′)n. Music An interval smaller than a semitone.
mi′cro·ton′al (-tō′nəl) adj.mi′cro·to·nal′i·ty (-tō-năl′ĭ-tē) n.mi′cro·ton′al·ly adv.

microtone

(ˈmaɪkrəʊˌtəʊn) n (Music, other) any musical interval smaller than a semitone ˌmicroˈtonal adj ˌmicrotoˈnality n ˌmicroˈtonally adv

mi•cro•tone

(ˈmaɪ krəˌtoʊn)

n. a musical interval smaller than a semitone. [1915–20] mi`cro•ton′al, adj. mi`cro•ton′al•ly, adv.