Medical Definition of parasite
: an organism living in, with, or on another organism in parasitism
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Dictionary: Definition of "parasite" Thesaurus: All synonyms and antonyms for "parasite" Spanish Central: Translation of "parasite" Nglish: Translation of "parasite" for Spanish speakers Britannica English: Translation of "parasite" for Arabic speakers Britannica.com: Encyclopedia article about "parasite"
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