Noun: ectozoan (ectozoa)
- Any external parasitic organism (as fleas)
"Ticks are ectozoa that can transmit diseases to their hosts";
- ectoparasite, ectozoon, epizoan, epizoon
- 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