/ Dictionary / Index H hyperfunction: Meaning and Definition of Find definitions for: hy•per•func•tion Pronunciation: (hī"pur-fungk'shun), [key] — n. Pathol. abnormally increased function, esp. of glands or other organs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyperform hypergalactia Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language