a combining form meaning “within,” used in the formation of compound words: endocardial.
DON’T VACILLATE! VANQUISH THIS WORD OF THE DAY QUIZ!
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Question 1 of 7
What does “vacillate” mean?
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-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for endo-
before a vowel end-
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
Medical definitions for endo-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for endo-
A prefix meaning inside, as in endoskeleton.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.