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Noun: ectozoan (ectozoa)
  1. Any external parasitic organism (as fleas)
    "Ticks are ectozoa that can transmit diseases to their hosts";
    - ectoparasite, ectozoon, epizoan, epizoon
Adjective: ectozoan
  1. Of or relating to epizoa
    "ectozoan organisms, such as certain lice, live on the external surfaces of their hosts";
    - epizoan

Derived forms: ectozoa

Type of: parasite