/ Dictionary / Index P parasitoidism: Meaning and Definition of Find definitions for: par•a•sit•oid•ism Pronunciation: (par'u-si-toi-diz"um, -sī-), [key] — n. the feeding by certain insect larvae on host tissues such that the host remains alive until larval development is complete and then usually dies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. parasitoid parasitology 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