blastodisk

[blas-tuh-disk]

blas·to·disk

[blas-tuh-disk]
noun Embryology.
the blastula that forms as a flattened sphere on top of the yolk in the yolk-laden eggs of birds and reptiles.
Also, blas·to·disc.


Origin:
1885–90; blasto- + disk
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Blastodisk is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
American Heritage
Medical Dictionary

blastodisk blas·to·disk or blas·to·disc (blās'tə-dĭsk')
n.

  1. The disk of active cytoplasm at the animal pole of a telolecithal egg.

  2. The blastoderm, especially in very early stages when its extent is small.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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