n.
Pronunciation: ' tr ē -( ˌ ) ō
Function: noun
Inflected Form: plural tri · os
Etymology: French, from Italian, from tri- (fr. L)
Date: circa 1724
1 a : a musical composition for three voice parts or three instruments b : the secondary or episodic division of a minuet or scherzo, a march, or of various dance forms
2 : the performers of a musical or dance trio
3 : a group or set of three