Sinhala Dictionary definitions for pentad
pentad 🔊
pentad : පංචකය
pentad definition
Noun. 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.
Adjective. Having the valence of a pentad.