ectoderm

[ek-tuh-durm]

See more synonyms for ectoderm on Thesaurus.com

noun Embryology.

the outer germ layer in the embryo of a metazoan.

Origin of ectoderm

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

Also called ectoblast.

Related formsec·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. 2019

Related Words for ectoderm

leather, wool, fur, skin, fleece, shell, hide, pelt, crust, husk, scale, membrane, rind, integument, pellicle, epidermis, felt, ectoderm, pelage, peltry

Examples from the Web for ectoderm

Historical Examples of ectoderm

Metablastic: relating to the ecto- or meta-blast or ectoderm.
Explanation of Terms Used in Entomology
John. B. Smith
Ectoblast: the outer wall of a cell; the ectoderm or epiblast.
Explanation of Terms Used in Entomology
John. B. Smith
The outer is the Ectoderm and the inner is the Endoderm or Hypoblast.
The Ethics of Medical Homicide and Mutilation
Austin O'Malley
The ectoderm retains its ciliation only in the sensory organs.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 2
Various
It consists of three layers: ectoderm, endoderm, and mesoderm.
The Sea-beach at Ebb-tide
Augusta Foote Arnold

British Dictionary definitions for ectoderm

ectoderm

exoderm

noun

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

Derived Formsectodermal 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

Word Origin and History for ectoderm

1861, from ecto- + -derm. Coined by Prussian embryologist Robert Remak (1815-1865).

ectoderm in Medicine

ectoderm

[ĕk′tə-dûrm′]

The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and sense organs develop.ectoblast

Related formsec′to•der′mal null adj.

ectoderm in Science

ectoderm

[ĕk′tə-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.