/ Dictionary / Index P parasitosis: Meaning and Definition of Find definitions for: par•a•si•to•sis Pronunciation: (par"u-sī-tō'sis, -si-), [key] — n. Pathol. parasitism (def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. parasitology parasol Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language