DYAD
\dˈa͡ɪad], \dˈaɪad], \d_ˈaɪ__a_d]\
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Two units treated as one; a couple; a pair.
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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 Valence.
By Oddity Software
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Two units treated as one; a couple; a pair.
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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 Valence.
By Noah Webster.
By Henderson, I. F.; Henderson, W. D.