/ Dictionary / Index E ecology: Meaning and Definition of Find definitions for: e•col•o•gy Pronunciation: (i-kol'u-jē), [key] — n. the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms. Also calledthe branch of sociology concerned with the spacing and interdependence of people and institutions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ecology (Thesaurus) ecological succession econ. Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language