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Meaning of octuplet

oc•tup•let

Pronunciation: (ok-tup'lit, -t'plit, -ty'- ok't&oobreve-plit, -ty&oobreve-), [key]
— n.
  1. a group, series, or combination of eight related items.
  2. a group of eight notes that are to be played or sung in the same time as six notes of equal value.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.