/ Dictionary / Index E epibenthos: Meaning and Definition of Find definitions for: ep•i•ben•thos Pronunciation: (ep"u-ben'thos), [key] — n. Biol. the aggregate of organisms living on the sea bottom between low tide and 100 fathoms (180 m). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. epi- epibiotic Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language