blas·to·derm | \ ˈbla-stə-ˌdərm \

Definition of blastoderm 

: a blastodisc after completion of cleavage and formation of the blastocoel

First Known Use of blastoderm

1837, in the meaning defined above

History and Etymology for blastoderm

earlier blastoderma, from blasto- blasto- + -derma -derma

Note: Term originated by the Baltic German embryologist and zoologist Christian Heinrich Pander (1794-1865) in Dissertatio inauguralis sistens historiam metamorphoseos, quam ovum incubatum prioribus quinque diebus subit (Würzburg, 1817), p. 21: "Praeterea enim, quod sibi sedem ac domicilium hoc deligit Embryo, ipsum quoque sua substantia ad ejus configurationem plurimum confert, quare id etiam in posterum blastoderma vocabimus." ("Moreover, because the embryo chooses this as its seat and domicile, and contributes much of its own substance to its configuration, we will henceforth call it the blastoderma.") In the German version of his dissertation (Beiträge zur Entwicklungsgeschichte des Hühnchens im Eye, Würzburg, 1817), Pander translates blastoderma as Keimhaut ("germ-skin").

Keep scrolling for more

Learn More about blastoderm

Share blastoderm

Statistics for blastoderm

Last Updated

21 Aug 2018

Look-up Popularity

Time Traveler for blastoderm

The first known use of blastoderm was in 1837

See more words from the same year

Keep scrolling for more

More Definitions for blastoderm


blas·to·derm | \ -ˌdərm \

Medical Definition of blastoderm 

: a blastodisc after completion of cleavage and formation of the blastocoel

called also discoblastula

More from Merriam-Webster on blastoderm Encyclopedia article about blastoderm

Comments on blastoderm

What made you want to look up blastoderm? Please tell us where you read or heard it (including the quote, if possible).


alleviating pain or harshness

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!