ecto-


a combining form meaning “outer,” “outside,” “external,” used in the formation of compound words: ectoderm.

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We’ve gathered some interesting words donated to English from Portuguese … as well as some that just don’t translate at all. Do you know what they mean?
Question 1 of 11
Which of the following animal names traces its immediate origin to Portuguese?
Also especially before a vowel, ect-.

Origin of ecto-

Combining form of Greek ektós outside
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for ecto-

ecto-

combining form

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-

ecto-

pref.

Outer; external:ectoparasite.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.