/ Dictionary / Index E ectoparasite: Meaning and Definition of Find definitions for: ec•to•par•a•site Pronunciation: (ek"tō-par'u-sīt"), [key] — n. an external parasite (opposed to endoparasite). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ectoparasite (Thesaurus) -ectomy ectophyte Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language