/ Dictionary / Index E ectotrophic: Meaning and Definition of Find definitions for: ec•to•troph•ic Pronunciation: (ek"tu-trof'ik, -trō'fik), [key] (of a mycorrhiza) growing outside the root or between the cells. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ectotherm ectozoan Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language