zo-
Americannoun
combining form
Usage
What does zo- mean? The combining form zo- is used like a prefix meaning “living being” or "animal." It is very occasionally used in scientific terms, especially in biology. The form zo- comes from Greek zôion, meaning “animal.” The word zoo also ultimately comes from this Greek root. Zoo is shortened from zoological garden. What are variants of zo-?The form zo- is a variant of zoo-, which loses its -o- when combined with words or word elements beginning with vowels. When combined as a suffix, zo- becomes -zoa or -zoon, as in protozoa or ectozoon. Want to know more? Read our Words That Use articles for zoo-, -zoa, and -zoon.
Etymology
Origin of zo
C20: from Tibetan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.