Definitions for: Dyad

[n] two items of the same kind

Webster (1913) Definition: Dy"ad, n. [L. dyas, dyadis, the number two. Gr. ?: cf. F.
dyade. See two, and cf. Duad.]
1. Two units treated as one; a couple; a pair.

2. (Chem.) An element, atom, or radical having a valence or
combining power of two.

Dy"ad, a. (Chem.)
Having a valence or combining power of two; capable of being
substituted for, combined with, or replaced by, two atoms of
hydrogen; as, oxygen and calcium are dyad elements. See

Synonyms: brace, couple, couplet, distich, doubleton, duad, duet, duo, pair, span, twain, twosome, yoke

See Also: 2, deuce, II, two

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