What is "ectozoa"

Ectozoon \Ec`to*zo"["o]n\, n.; pl. Ectozoa. [NL., fr. Gr. 'ekto`s outside outside + zw^,on an animal.] (Zo["o]l.) See Epizo["o]n. [1913 Webster] ||

n. (plural of ectozoon English)

See ectozoan

1. adj. of or relating to epizoa [syn: epizoan]

2. n. any external parasitic organism (as fleas) [syn: ectoparasite, ectozoon, epizoan, epizoon]

3. [also: ectozoa (pl)]