Relating to or describing an embryo with a disc-shaped blastoderm (the early embryonic layer).
From disco- (disc) + -blastic (relating to blastoderm, from Greek blastos 'sprout'). This embryology term describes how certain animals' embryos develop in a flat disc shape rather than as a sphere.
When you look at a chicken egg developing, the embryo starts as a flat disc floating on the yolk—this is discoblastic development, which is completely different from how mammals with round embryos develop.
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