01 n. A union of three; three objects treated as one; a ternary; a trinity; as, a triad of deities.
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1.
A union of three; three objects treated as one; a ternary; a trinity; as, a triad of deities.
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2.
A chord of three notes.(Mus.)
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3.
An element or radical whose valence is three.(Chem.)
Phrases & compounds
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 Trimurti.