/ Dictionary / Index P parasitize: Meaning and Definition of Find definitions for: par•a•si•tize Pronunciation: (par'u-si-tīz", -sī-), [key] — -tized, -tiz•ing. to live on (a host) as a parasite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. parasitism parasitoid Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language