Dictionary entry

Epizoön

Webster's Dictionary 1913

‖Ep′i‐zo″ön (?), n.; pl.Epizoa (#). [NL., fr. Gr. επἴ upon + ζῳ̑ον animal.] (Zoöl.) 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.