from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An epizoic organism.

from The Century Dictionary.

  • noun One of the Epizoa; an epizoan.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biology An external animal parasite

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any external parasitic organism (as fleas)


Sorry, no etymologies found.



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