/ Dictionary / Index H hissing: Meaning and Definition of Find definitions for: hiss•ing Pronunciation: (his'ing), [key] — n. the act of emitting a hiss. the sound of a hiss. an occasion or object of scorn. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hissing (Thesaurus) hisself hissy Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language