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ectoderm

[ ek-tuh-durm ]
/ ˈɛk təˌdɜrm /
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noun Embryology.
the outer germ layer in the embryo of a metazoan.
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Also called ectoblast.

Origin of ectoderm

First recorded in 1860–65; ecto- + -derm

OTHER WORDS FROM ectoderm

ec·to·der·mal, ec·to·der·mic, adjectiveec·to·der·moi·dal [ek-toh-der-moid-l], /ˌɛk toʊ dərˈmɔɪd l/, adjectivesub·ec·to·der·mal, adjectivesub·ec·to·der·mic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use ectoderm in a sentence

British Dictionary definitions for ectoderm

ectoderm

exoderm

/ (ˈɛktəʊˌdɜːm) /

noun
the outer germ layer of an animal embryo, which gives rise to epidermis and nervous tissueSee also mesoderm, endoderm

Derived forms of ectoderm

ectodermal or ectodermic, adjective
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 ectoderm

ectoderm
[ ĕktə-dûrm′ ]

The outermost of the primary germ layers of an animal embryo. In vertebrates, the ectoderm gives rise to the epidermis and associated tissues (such as hair and sweat glands), enamel of the teeth, sense organs, nervous system, and lining of the nose, mouth, and anus. Compare endoderm mesoderm.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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