Definitions for "Hexad"
An atom whose valence is six, and which can be theoretically combined with, substituted for, or replaced by, six monad atoms or radicals; as, sulphur is a hexad in sulphuric acid. Also used as an adjective.
Keywords:  cardinal, five, sum, number, one
the cardinal number that is the sum of five and one
Keywords:  quantity, equal, unit
a unit of quantity equal to 6.