/ Dictionary / Index H hypergalactia: Meaning and Definition of Find definitions for: hy•per•ga•lac•ti•a Pronunciation: (hī"pur-gu-lak'tē-u), [key] — n. Pathol. an abnormally large secretion of milk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyperfunction hypergamy Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language