endo-

a combining form meaning “within,” used in the formation of compound words: endocardial.
Also, especially before a vowel, end-.

Origin:
< Greek, combining form of éndon within; cognate with Old Irish ind-, OL endo- in, on

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To endo
Collins
World English Dictionary
endo- or (before a vowel) end-
 
—combining form
inside; within: endocrine
 
[from Greek, from endon within]
 
end- or (before a vowel) end-
 
—combining form
 
[from Greek, from endon within]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Endo is always a great word to know.
So is callithumpian. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a fool or simpleton; ninny.
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Etymonline
Word Origin & History

endo-
comb. form of Gk. endon "within," lit. "in the house," from en- "in" + base of domos "house" (see domestic). Used to form scientific compounds in Gk.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

endo- or end-
pref.
Inside; within: endometrium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
endo-  
A prefix meaning "inside," as in endoskeleton.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Abbreviations & Acronyms
endo
endocrine
ENDO
endometriosis
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences
What is the difference between an endo and exothermic reaction.
Partners:WordBloglinesCitysearchThe Daily BeastAsk AnswersAsk KidsLife123SendoriHome Advisor
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
About PRIVACY POLICY Terms API Careers Advertise with Us Contact Us Suggest a Word Help
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT