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Diatonic

/ˌdaɪəˈtɒnɪk/adjective

Using the seven notes of a standard major or minor scale, without added sharps or flats.

The Greek roots

διά
diá
through
+
τόνος
tónos
tone, tension

Literally: through the tones

The story of the word

τόνος is a stretching before it is a note, from τείνειν, to stretch, because a gut string is stretched until it sounds. The diatonic genus of Greek theory stepped through whole tones rather than crowding small intervals together, and διά, through, records that stride. The modern major and minor scales inherit the label, and a piano's white keys are the diatonic set left standing when the black ones are ignored.

How it travelled
Ancient Greek → Latin → French → English
First recorded
16th century

The same roots elsewhere

Other languages reached for exactly the same Greek pieces.

Same family

chromatictonemonotoneintonation

In a sentence

The tune stays diatonic until the last four bars.

Most folk melodies are diatonic and none the poorer for it.

Built on the same root

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