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O and O

or O&O

[oh uh nd oh] /ˈoʊ ənd ˈoʊ/
owned and operated.


a combining form meaning “egg,” used in the formation of compound words:
Origin of oo-
< Greek ōio-, combining form of ōión egg1


or oo, o’o

[oh-oh] /ˈoʊ oʊ/
noun, plural o-os.
any of several species of Hawaiian honey eaters of the genus Moho, especially the extinct M. nobilis, of the island of Hawaii, that had black plumage and two tufts of yellow plumes used to make ceremonial robes for the Hawaiian kings.
1885-90; < Hawaiian ʿōʿō Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for oo
Historical Examples
British Dictionary definitions for oo


combining form
egg or ovum: oosperm
Word Origin
from Greek ōionegg1
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
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Word Origin and History for oo


word-forming element meaning "egg, eggs," from Greek oon "egg," cognate with Latin ovum, Old Norse egg (see egg (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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oo in Medicine

oo- pref.
Egg; ovum: oogenesis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for oo



double-o •In written use only -oo

Related Terms


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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oo in Technology
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Related Abbreviations for oo


The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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