Epizoon

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Epizoon \Ep`i*zo"["o]n\, n.; pl. {Epizoa}. [NL., fr. Gr. 'epi`
     upon + zw^,on animal.] (Zo["o]l.)
     One of the artificial group of invertebrates of various
     kinds, which live parasitically upon the exterior of other
     animals; an ectozo["o]n. Among them are the lice, ticks, many
     acari, the lerneans, or fish lice, and other crustaceans.


     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  epizoon
       n : any external parasitic organism (as fleas) [syn: {ectoparasite},
            {ectozoan}, {ectozoon}, {epizoan}]