/ Dictionary / Index E ecotone: Meaning and Definition of Find definitions for: ec•o•tone Pronunciation: (ek'u-tōn", ē'ku-), [key] — n. Ecol. the transition zone between two different plant communities, as that between forest and prairie. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ecoterrorist ecotourism Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language