- plural of zoon.
- any of the individuals of a compound organism.
- any individual, or the individuals collectively, produced from a single egg.
Origin of zoon
1860–65; < New Latin zōon < Greek zôion animal
- a combining form meaning “animals,” “organisms” of the kind specified by the initial element, used in the names of classes in zoology: Protozoa.
Origin of -zoa
< New Latin < Greek zôia, plural of zôion animal; see zoon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for zoa
But that risk pales compared to the risk of AIPAC becoming ECI or ZOA.Why AIPAC Won't Fight Hagel
January 7, 2013
In Penus the larv are of comparatively simple form, but in the allied genus Sergestes the zoa has a very remarkable appearance.
In the later stages of the zoa the rudiments of the hinder thoracic limbs and of the swimmerets appear as little buds.
The Zoa is a minute transparent organism, swimming at the surface of the sea.
In the majority of the Decapoda the larva leaves the egg in a form known as the Zoa (fig. 210).
The next stage (fig. 215) at any rate represents the commencement of the Zoa series.
- the plural of zoon
- indicating groups of animal organismsMetazoa
from New Latin, from Greek zōia, plural of zōion animal, living being
- a less common term for zooid (def. 1)
C19: from New Latin, from Greek zōion animal; related to Greek zōē life
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for zoa
plural of zoon.
1864, from Greek zoion "animal" (see zoo).
Online Etymology Dictionary, © 2010 Douglas Harper