/ Dictionary / Index Q quintuplet: Meaning and Definition of Find definitions for: quin•tu•plet Pronunciation: (kwin-tup'lit, -t'plit, -ty'-, kwin'too-plit, -tyoo-), [key] — n. any group or combination of five, esp. of the same kind. five children or offspring born of one pregnancy. one of five such children or offspring. a group of five notes of equal value performed in the time normally taken for four. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: quintuplet (Thesaurus) quintuple quintuplex Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language