trophoblast

- 4 dictionary results

troph⋅o⋅blast

[trof-uh-blast, troh-fuh-]

–noun Embryology.

the layer of extraembryonic ectoderm that chiefly nourishes the embryo or develops into fetal membranes with nutritive functions.

Origin:
1885–90; tropho- + -blast

Related forms:

troph⋅o⋅blas⋅tic, adjective

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Link To 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® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: tro·pho·blast
Pronunciation: 'trO-f&-"blast
Function: noun
: the outer layer of the mammalian blastocyst that suppliesnutrition to the embryo, facilitates implantation by eroding away the tissues of the uterus with which it comes in contact allowing the blastocyst to sink into the cavity formed in the uterine wall,and differentiates into the extraembryonic membranes surrounding the embryo called also trophoderm —tro·pho·blas·tic /"trO-f&-'blas-tik/ adjective

Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

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.

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