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blastodisk

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WordReference Random House Unabridged Dictionary of American English © 2026

blas•to•disk n. [Embryol.]

Developmental Biologythe 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′.

blasto- + disk 1885–90

'blastodisk' also found in these entries (note: many are not synonyms or translations):

embryonic disk - germinal disk

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