/ Dictionary / Index P preemergent: Meaning and Definition of Find definitions for: pre•e•mer•gent Pronunciation: (prē"i-mûr'junt), [key] — adj. Hort. of or pertaining to seedlings before they emerge or appear above ground: a preemergent weed-killer. —n. a preemergence chemical, as a herbicide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. preemergence preemie Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language