Definition of quintet

< quintessential

quintile >

quin·tet also quin·tette    (kwn-tt) KEY 

NOUN:

1. Music
   1. A composition for five voices or five instruments.
   2. A group of five singers or five instrumentalists.
2. A group of five.

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ETYMOLOGY:
Probably from Italian quintetto, diminutive of quinto, fifth, from Latin quntus; see penk^we in Indo-European roots