ectozoon

Từ điển WordNet v3.1 - WordNet Dictionary

noun

any external parasitic organism (as fleas)
• Syn:
ectoparasite, ectozoan, epizoan, epizoon
• Derivationally related forms:
epizoan (for: epizoon), ectozoan
• Hypernyms:
parasite
• Hyponyms:
flea