/ Dictionary / Index J jejun-: Meaning and Definition of Find definitions for: jejun- Pronunciation: [key] var. ofbefore a vowel: jejunectomy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Jehu jejune Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language