germ layer

noun

: any of the three primary layers of cells differentiated in most embryos during and immediately following gastrulation

Example Sentences

Recent Examples on the Web Also lost is the inner germ layer that's full of antioxidants, magnesium, potassium, vitamin B and healthy fats. —Sandee Lamotte, CNN, 13 July 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'germ layer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1877, in the meaning defined above

Time Traveler
The first known use of germ layer was in 1877

Dictionary Entries Near germ layer

Germiston

germ layer

germless

See More Nearby Entries 

Cite this Entry

“Germ layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/germ%20layer. Accessed 20 Mar. 2023.

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Medical Definition

germ layer

noun
: any of the three primary layers of cells differentiated in most embryos during and immediately following gastrulation

More from Merriam-Webster on germ layer

Britannica.com: Encyclopedia article about germ layer

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