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Webster 1913 Edition

Noun.

[L.

trias

-adis

, Gr. [GREEK], [GREEK], fr.[GREEK], [GREEK], three: cf. F.

triade

. See

, and cf.

A union of three; three objects treated as one; a ternary; a trinity;

as, a

triad

of deities

(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.

(Chem.)

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.

–

Hindu triad

See

Noun.

[L. trias, from tres, three.] The union of three; three united. In music, the common chord or harmony, consisting of the third, fifth and eighth.