terzetto
noun
ter·zet·to
tertˈset(ˌ)ō
variants or less commonly terzet or terzett
(ˈ)tert¦set
plural terzettos
-t(ˌ)ōz
also terzets or terzetts -ts
: a musical composition for three voices : trio
Word History
Etymology
Italian terzetto
First Known Use
circa 1749, in the meaning defined above