/ Dictionary / Index E excursus: Meaning and Definition of Find definitions for: ex•cur•sus Pronunciation: (ek-skûr'sus), [key] — pl. -sus•es, -sus. a detailed discussion of some point in a book, esp. one added as an appendix. a digression or incidental excursion, as in a narrative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: excursus (Thesaurus) excursive excurvature Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language