/ Dictionary / Index E exobiota: Meaning and Definition of Find definitions for: ex•o•bi•o•ta Pronunciation: (ek"sō-bī-ō'tu), [key] — n. extraterrestrial life. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. exobiology exocarp Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language