/ Dictionary / Index E excogitate: Meaning and Definition of Find definitions for: ex•cog•i•tate Pronunciation: (eks-koj'i-tāt"), [key] — -tat•ed, -tat•ing. to think out; devise; invent. to study intently and carefully in order to grasp or comprehend fully. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: excogitate (Thesaurus) exclusivism excommunicable Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language