/ Dictionary / Index C cachinnate: Meaning and Definition of Find definitions for: cach•in•nate Pronunciation: (kak'u-nāt"), [key] — -nat•ed, -nat•ing. to laugh loudly or immoderately. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cachinnate (Thesaurus) cachexia Cachoeiro do Itapemirim Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language