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单词 parablast
释义

Definition of parablast in English:

parablast

noun ˈparəblɑːstˈparəblast
  • Embryology. Especially in the terminology of W. His: a layer of cells that gives rise to the blood vessels and connective tissue of the embryo (embryonic mesenchyme), (supposedly) located outside the blastoderm. Now historical.

Origin

Mid 19th century (in an earlier sense). From para- + -blast; in sense 1 after either German Parablast or scientific Latin parablasta.

Definition of parablast in US English:

parablast

noun
  • Embryology. Especially in the terminology of W. His: a layer of cells that gives rise to the blood vessels and connective tissue of the embryo (embryonic mesenchyme), (supposedly) located outside the blastoderm. Now historical.

Origin

Mid 19th century (in an earlier sense). From para- + -blast; in sense 1 after either German Parablast or scientific Latin parablasta.

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更新时间:2025/6/19 15:12:49