/ Dictionary / Index E exterminatory: Meaning and Definition of Find definitions for: ex•ter•mi•na•to•ry Pronunciation: (ik-stûr'mu-nu-tôr"ē, -tōr"ē), [key] — adj. serving or tending to exterminate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. exterminator extermine Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language