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a combining form meaning “outer,” “outside,” “external,” used in the formation of compound words: ectoderm.
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The rainy weather could not ________ my elated spirits on my graduation day.
Also especially before a vowel, ect-.
Origin of ecto-
Combining form of Greek ektós outside
Words nearby ecto-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use ecto- in a sentence
But rendered freely, it reads: morishille's voozy, with lacto-ecto added for a new taste sensation.One Man's Poison|Robert Sheckley
Metablastic: relating to the ecto- or meta-blast or ectoderm.
Ecto-parasite: one that is attached to the external surface of the host.
British Dictionary definitions for ecto-
indicating outer, outside, externalectoplasm
Word Origin for ecto-
from Greek ektos outside, from ek, ex out
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 ecto-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.