diatonic

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. adjective based on the standard major or minor scales consisting of 5 tones and 2 semitones without modulation by accidentals
  2. adjective based on or using the five tones and two semitones of the major or minor scales of western music

Etymology

From French diatonique or Late Latin diatonicus, ultimately from Ancient Greek διατονικός (diatonikós), in the phrase [γένος (génos, “type, genus”)] διατονικός (diatonikós) (in reference to the diatonic tetrachord, and in contrast to the chromatic and enharmonic tetrachords), from διάτονος (diátonos) (διά (diá) + τόνος (tónos)), of disputed etymology, as both components are ambiguous. Most plausibly, διάτονος (diátonos) refers to “stretched intervals”, as the intervals of the diatonic tetrachord are the most evenly distributed or “stretched out”, compared to the chromatic and enharmonic tetrads, which use smaller, more crowded together intervals. Compare pyknon, from πυκνός (puknós, “dense, compressed”), referring to the lower part of the non-diatonic tetrachords: the diatonic tetrachord has widely spaced notes (“stretched out”), while the other tetrachords have a closely spaced notes (“compressed”).

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