triad - noun

the cardinal number that is the sum of one and one and one

a set of three similar things considered as a unit

three people considered as a unit

a three-note major or minor chord; a note and its third and fifth tones

triad - thesaurus

leash   tercet   ternary   ternion   terzetto   three   threesome   tierce   trey   trine   trinity   trio   triple   triplet   troika