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archiblast

[ahr-kuh-blast]
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noun Biology.
  1. the formative part of the egg, as distinguished from the part that nourishes the embryo.
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Origin of archiblast

First recorded in 1875–80; archi- + -blast
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018