terzetto Meaning, Definition & Usage

  1. noun the cardinal number that is the sum of one and one and one
    deuce-ace; trio; triplet; tercet; tierce; troika; three; trey; 3; ternion; trine; ternary; triad; threesome; leash; III; trinity.

WordNet

Ter*zet"to noun
Etymology
It., dim. of terzo the third, L. tertius. See Tierce.
Definitions
  1. (Mus.) A composition in three voice parts; a vocal (rarely an instrumental) trio.

Webster 1913