/ Dictionary / Index H hypervitaminosis: Meaning and Definition of Find definitions for: hy•per•vi•ta•mi•no•sis Pronunciation: (hī"pur-vī"tu-mu-nō'sis), [key] — n. Pathol. an abnormal condition caused by an excessive intake of vitamins. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hypervitaminosis (Thesaurus) hyperventilation hyperweak force Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language