/ Dictionary / Index P parasitic: Meaning and Definition of Find definitions for: par•a•sit•ic Pronunciation: (par"u-sit'ik), [key] — adj. of, pertaining to, or characteristic of parasites. (of diseases) due to parasites. excrescent (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: parasitic (Thesaurus) parasite drag parasiticide Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language