Index of English words, starting with "he"

(1) - Hepta () A combining form from Gr. "epta`, seven.

(1) - Heptachord (n.) A composition sung to the sound of seven chords or tones.
(2) - Heptachord (n.) A lyre with seven chords.
(3) - Heptachord (n.) A system of seven sounds.

(1) - Heptad (n.) An atom which has a valence of seven, and which can be theoretically combined with, substituted for, or replaced by, seven monad atoms or radicals; as, iodine is a heptad in iodic acid. Also used as an adjective.

(1) - Heptagon (n.) A plane figure consisting of seven sides and having seven angles.

(1) - Heptagonal (a.) Having seven angles or sides.