Dictionary
Thesaurus
Encyclopedia
Translator
Web
Related Searches
Nearby Words

blastoderm

 - 4 dictionary results

blas⋅to⋅derm

  [blas-tuh-durm]
Use blastoderm in a Sentence
–noun Embryology.
1. the primitive layer of cells that results from the segmentation of the ovum.
2. the layer of cells forming the wall of the blastula, and in most vertebrates enclosing a cavity or a yolk mass.
Origin:
1855–60; blasto- + -derm

Related forms:
blas⋅to⋅der⋅mic, blas⋅to⋅der⋅mat⋅ic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To blastoderm
blas·to·derm   (blās'tə-dûrm')   
n.  

  1. The layer of cells that develops on the surface of the yolk in an avian or reptilian egg and gives rise to the germinal disk from which the embryo develops.

  2. The layer of cells formed by the cleavage of a fertilized mammalian egg. It later divides into the three germ layers from which the embryo develops.

blas'to·der'mic, blas'to·der·mat'ic (-dər-māt'ĭk) 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.
Cite This Source
Medical Dictionary

Main Entry: blas·to·derm
Pronunciation: -"d&rm
Function: noun
: a blastodisc after completion of cleavage and formation of the blastocoelcalled also discoblastula
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
Cite This Source
Medical Dictionary

blastoderm blas·to·derm (blās'tə-dûrm') or blas·to·der·ma (blās'tə-dûr'mə)
n.
The layer of cells formed by the cleavage of a fertilized mammalian egg, which later divides into the three germ layers from which the embryo develops. Also called germinal membrane, germ membrane.

blas'to·der'mal or blas'to·der'mic or blas'to·der·mat'ic (-dər-māt'ĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Search another word or see blastoderm on Thesaurus | Reference
FacebookTwitterFollow us:
Partner Sites:
Ask AnswersEviteExpediaHotelsHotwireLife123LiveDailyMy Way