Words Containing Pentad

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Definition of pentad

n. - Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds.
a. - Having the valence of a pentad.

pentadecoic pentadelphous pentadic pentadicity pentadiene pentadodecahedron pentadrachm pentadrachma pentads