/ Dictionary / Index H hysteric: Meaning and Definition of Find definitions for: hys•ter•ic Pronunciation: (hi-ster'ik), [key] — n. Usually,a fit of uncontrollable laughter or weeping; hysteria. a person subject to hysteria. —adj. hysterical. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hysteric (Thesaurus) hysteria hysterical Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language