/ Dictionary / Index P prelusion: Meaning and Definition of Find definitions for: pre•lu•sion Pronunciation: (pri-l'zhun), [key] — n. a prelude. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Preludin prelusive Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language