/ Dictionary / Index P prolusion: Meaning and Definition of Find definitions for: pro•lu•sion Pronunciation: (prō-l'zhun), [key] — n. a preliminary written article. an essay of an introductory nature, preliminary to a more profound work. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prolusion (Thesaurus) prolonge knot prolusory Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language