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单词 proamniotic
释义

proamnioticadj.

Brit. /ˌprəʊamnɪˈɒtɪk/, U.S. /ˈˌproʊˌæmniˈɑdɪk/
Origin: Formed within English, by derivation. Etymons: pro- prefix2, amniotic adj.
Etymology: < pro- prefix2 + amniotic adj., after proamnion n.
Embryology.
Of, relating to, or derived from the proamnion.
ΚΠ
1889 Q. Jrnl. Microsc. Sci. Dec. 290 Long after the true amnion has been quite completed the head gradually emerges from this pro-amniotic pit.
1953 Q. Rev. Biol. 28 130/2 Normally, this inner cell mass becomes organized around the proamniotic cavity.
1995 Development 121 3529 Cells detached from the ectodermal cell layer and were dispersed into the proamniotic cavity.
This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).
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adj.1889
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