单词 | germinal disc |
释义 | > as lemmasgerminal disc germinal disc n. [after German Keimscheibe (1826 or earlier)] blastoderm, esp. that in a bird's (or other telocithal) egg. ΚΠ 1830 Edinb. New Philos. Jrnl. 9 304 Baer has represented the cicatricula or germinal disk in the ova of the Coluber natrix, the Lacerta agilis, and the L. crocea. 1939 T. L. Green Pract. Animal Biol. ii. 231 Examine and draw specimens showing early segmentation stages in the germinal disc, divided into a central area pellucida surrounded by the area opaca. 1999 Isis 90 469 He [sc. His] began by modeling the germinal disc of embryology on the imperfectly elastic plate of analytical mechanics. < as lemmas |
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