zoo-

zoo-

a combining form meaning “living being,” “animal,” used in the formation of compound words: zoometry; zooplankton.
Also, especially before a vowel, zo-.


Origin:
combining form representing Greek zôion animal

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World English Dictionary
zoo- or (before a vowel) zo-
 
combining form
indicating animals: zooplankton
 
[from Greek zōion animal]
 
zo- or (before a vowel) zo-
 
combining form
 
[from Greek zōion animal]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

zoo- or zo-
pref.
Animal; animal kingdom: zoonosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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