Word Study
epizoön
CIDE DICTIONARY
epizoön, n. [NL., fr. Gr. 'epi` upon + zw^,on animal.].
One of the artificial group of invertebrates of various kinds, which live parasitically upon the exterior of other animals; an ectozoön. Among them are the lice, ticks, many acari, the lerneans, or fish lice, and other crustaceans. [1913 Webster]
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