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trophoblast

[trof-uh-blast, troh-fuh-] /ˈtrɒf əˌblæst, ˈtroʊ fə-/
noun, Embryology
1.
the layer of extraembryonic ectoderm that chiefly nourishes the embryo or develops into fetal membranes with nutritive functions.
Origin
1885-1890
1885-90; tropho- + -blast
Related forms
trophoblastic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for trophoblastic

trophoblast

/ˈtrɒfəˌblæst/
noun
1.
the outer layer of cells of the embryo of placental mammals, which is attached to the uterus wall and absorbs nourishment from the uterine fluids
Derived Forms
trophoblastic, adjective
Word Origin
C19: from tropho- + -blast
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
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trophoblastic in Medicine

trophoblast tro·pho·blast (trō'fə-blāst')
n.
The outermost layer of cells of the blastocyst that attaches the fertilized ovum to the uterine wall and serves as a nutritive pathway for the embryo. Also called trophoderm.


tro'pho·blas'tic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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trophoblastic in Science
trophoblast
  (trō'fə-blāst')   
The outermost layer of cells of the blastocyst, which attaches the fertilized ovum to the uterine wall and serves as a nutritive pathway for the embryo. The trophoblast eventually differentiates into such tissues as the amnion, the placenta, and the umbilical cord.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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