/ Dictionary / Index D disinfest: Meaning and Definition of Find definitions for: dis•in•fest Pronunciation: (dis"in-fest'), [key] — v.t. to rid of insects, rodents, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: disinfest (Thesaurus) disinfectant disinflate 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