cosmo

cosmo-

a combining form meaning “world,” “universe,” used in the formation of compound words: cosmography; in contemporary usage, sometimes representing Russian kosmo-, it may mean “outer space,” “space travel,” or “cosmic ray”: cosmonaut.
Also, especially before a vowel, cosm-.
Compare astro-.


Origin:
< Greek kosmo-, combining form of kósmos cosmos

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World English Dictionary
cosmo- or (before a vowel) cosm-
 
combining form
indicating the world or universe: cosmology; cosmonaut; cosmography
 
[from Greek: cosmos]
 
cosm- or (before a vowel) cosm-
 
combining form
 
[from Greek: cosmos]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

cosmo-
prefix (before a vowel cosm-), from Gk. kosmos (see cosmos).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
Cosmo
Cosmopolitan
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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