endo-

Save This Word!

a combining form meaning “within,” used in the formation of compound words: endocardial.

QUIZ

THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?

Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.

Question 1 of 7

In the UK, COTTON CANDY is more commonly known as…

candystring

candyfloss

candypuff

TAKE THE QUIZ TO FIND OUT

Also especially before a vowel, end-.

Origin of endo-

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

Words nearby endo-

end matter, end member, end mill, endmost, endnote, endo-, endobiotic, endoblast, endocardial, endocarditis, endocardium

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use endo- in a sentence

On the other hand, endo- and peri-carditis are excessively rare.
A System of Practical Medicine by American Authors, Vol. I|Various
Purpura rheumatica never seems to result in endo- or pericarditis.
A System of Practical Medicine By American Authors, Vol. II|Various
There are other instances of cartilaginous endo-skeleton in groups other than the Vertebrata.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6|Various
Like the worm-aneurism itself, atheroma of the abdominal arteries arises from a circumscribed acute and subacute endo-arteritis.
Parasites|T. Spencer Cobbold

British Dictionary definitions for endo-

endo-

before a vowel end-

combining form

inside; withinendocrine

Word Origin for endo-

from Greek, from endon within

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

Scientific definitions for endo-

endo-

A prefix meaning inside, as in endoskeleton.