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blastodisk

American  
[blas-tuh-disk] / ˈblæs təˌdɪsk /
Or blastodisc

noun

Embryology.

  1. the blastula that forms as a flattened sphere on top of the yolk in the yolk-laden eggs of birds and reptiles.

Etymology

Origin of blastodisk

First recorded in 1885–90; blasto- + disk

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.