From Wiktionary, the free dictionary
From pentuple + -et.
pentuplet (plural pentuplets)
- Synonym of quintet: A group of five, particularly musicians.
- Coordinate terms: singlet, couplet, triplet, quadruplet, tetraplet, quintuplet, sextuplet, septuplet, octuplet, nonuplet, decuplet, centuplet, multiplet
