hemidemisemiquaver
\ hem-ee-dem-ee-SEM-ee-kwey-ver \ , noun;
1.Music. Chiefly British . a sixty-fourth note.
Quotes:
Their gaiety consisted of ruling staves and copying a borrowed duet filled with hemidemisemiquavers .
-- Patrick O'Brian, Master and Commander , 1969
Anything could follow, a hemidemisemiquaver or a whole note; and the translator was charged with interpreting the score.
-- Ward Just, The Translator , 1991
Origin:
Hemidemisemiquaver entered English in the mid-1800s, as an extension of demisemiquave , a thirty-second note. A quaver is chiefly British word for an eighth note.
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