/ Dictionary / Index D dissipated: Meaning and Definition of Find definitions for: dis•si•pat•ed Pronunciation: (dis'u-pā"tid), [key] — adj. indulging in or characterized by excessive devotion to pleasure; intemperate; dissolute. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dissipated (Thesaurus) dissipate dissipation Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language