/ Dictionary / Index E exine: Meaning and Definition of Find definitions for: ex•ine Pronunciation: (ek'sēn, -sīn), [key] — n. Bot. the outer coat of a spore, esp. a pollen grain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. eximious ex int. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language