triad (
http://definr.com/triad)
n 1: the cardinal number that is the sum of one and one and one
[syn:
three,
3,
III,
trio,
threesome,
tierce,
leash,
troika,
trine,
trinity,
ternary,
ternion,
triplet,
tercet,
terzetto,
trey,
deuce-ace]
2: a set of three similar things considered as a unit [syn:
trio,
triplet]
3: three people considered as a unit [syn:
trio,
threesome,
trinity]
4: a 3-note major or minor chord; a note and its third and
fifth tones [syn:
common chord]