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zoo-(word root) living being, animal
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree
1. Animal; animal kingdom: zoography.
2. Motile: zoospore.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
zoo-or before a vowel
(Zoology) indicating animals: zooplankton.
[from Greek zōion animal]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
n., pl. zoos.
1. Also called zoological garden. a parklike area in which live animals are kept in cages or large enclosures for public exhibition.
2. a place, activity, or group marked by chaos or unrestrained behavior.
[1840–50; first two syllables of zoological garden taken as one syllable]
zoo′ey, adj. zoo•i•er, zoo•i•est.
a combining form meaning “living being,” “animal”: zooplankton. Also, esp. before a vowel,zo-.
[comb. form representing Greek zôion animal]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.