Diatonic

прилагательное [музыка] диатонический

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Diatonic

adjective Etymology: Late Latin diatonicus, from Greek diatonikos, from diatonos stretching, from diateinein to stretch out, from dia- + teinein to stretch — more at thin of, relating to, or being a musical scale (as a major or minor scale) comprising intervals of five whole steps and two half steps • diatonically adverb

Merriam-Webster's Collegiate Dictionary