epizoon

[ep-uh-zoh-on, -uhn]

ep·i·zo·on

[ep-uh-zoh-on, -uhn]
noun, plural ep·i·zo·a [-zoh-uh] . Biology.
an external parasite or commensal on the body of an animal; ectozoon.
Also, ep·i·zo·ite.


Origin:
1830–40; < Neo-Latin; see epi-, -zoon
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Epizoon is always a great word to know.
So is primordial soup. Does it mean:
mode of organization; construction and arrangement of tissues, parts, or organs
the seas and atmosphere on earth before the existence of life, primarily containing a mixture of water, hydrogen, methane, ammonia, and carbon dioxide
Collins
World English Dictionary
epizoon (ˌɛpɪˈzəʊɒn)
 
n , pl -zoa
an animal, such as a parasite, that lives on the body of another animal
 
[C19: New Latin, from epi- + Greek zōion animal]
 
epi'zoan
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

epizoon ep·i·zo·on (ěp'ĭ-zō'ŏn, -ən)
n. pl. ep·i·zo·a (-zō'ə)
An epizoic organism.

The American Heritage® Stedman's Medical Dictionary
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