Index of English words, starting with "he"

(1) - Hexa () A prefix or combining form, used to denote six, sixth, etc.; as, hexatomic, hexabasic.

(1) - Hexachord (n.) A series of six notes, with a semitone between the third and fourth, the other intervals being whole tones.

(1) - Hexad (n.) 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.