Category:Triad

Tri"ad, n. Etym: [l.trias, -adis, gr. triade. See three, and cf. Trias, trio.]

1. A union of three; three objects treated as one; a ternary; a Trinity; as, a triad of deities.

2. (mus.) (a) a chord of three notes. (b) the common chord, consisting of a tone with its third and fifth, With or without the octave.

3. (chem.)

Defn: an element or radical whose valence is three. Triads of the Welsh bards, poetical histories, in which the facts recorded are Grouped by threes, three things or circumstances of a kind being Mentioned together. -- hindoo triad. See trimurti.