follow Dictionary.com

What's the "een" in Halloween?

endoderm

[en-duh-durm] /ˈɛn dəˌdɜrm/
noun
1.
Also called endoblast. Embryology. the innermost cell layer of the embryo in its gastrula stage.
2.
Anatomy. the innermost body tissue that derives from this layer, as the gut lining.
Also, entoderm.
Origin
1825-1835
1825-35; < French endoderme; see endo-, -derm
Related forms
endodermal, endodermic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for endoderm

endoderm

/ˈɛndəʊˌdɜːm/
noun
1.
the inner germ layer of an animal embryo, which gives rise to the lining of the digestive and respiratory tracts See also ectoderm, mesoderm
Derived Forms
endodermal, endodermic, entodermal, entodermic, 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
Cite This Source
Word Origin and History for endoderm
n.

1835, from endo- + -derm. Coined by Prussian embryologist Robert Remak (1815-1865).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
endoderm in Medicine

endoderm en·do·derm (ěn'də-dûrm') or en·to·derm (ěn'tə-)
n.
The innermost of the three primary germ layers of an embryo, developing into the gastrointestinal tract, the lungs, and associated structures. Also called hypoblast.


en'do·der'mal adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
endoderm in Science
endoderm
  (ěn'də-dûrm')   
The innermost of the primary germ layers of an animal embryo. In vertebrates, the endoderm gives rise to the respiratory tract, gastrointestinal tract (except mouth and anus), glands associated with the gastrointestinal tract, bladder, and urethra. Compare ectoderm, mesoderm.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Article for endoderm

the innermost of the three germ layers, or masses of cells (lying within ectoderm and mesoderm), which appears early in the development of an animal embryo. The endoderm subsequently gives rise to the epithelium (tissue that covers, or lines, a structure) of the pharynx, including the eustachian tube, the tonsils, the thyroid gland, parathyroid glands, and thymus gland; the larynx, trachea, and lungs; the gastrointestinal tract (except mouth and anus), the urinary bladder, the vagina (in females), and the urethra. The term endoderm is sometimes used to refer to the gastrodermis, the simple tissue that lines the digestive cavity of cnidarians and ctenophores. Compare ectoderm; mesoderm.

Learn more about endoderm with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for endoderm

Some English speakers likely know this word

Word Value for endoderm

12
14
Scrabble Words With Friends

Nearby words for endoderm