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词汇 amnion
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amnion n.

"innermost membrane around the embryo of a higher vertebrate" (reptiles, birds, mammals), 1660s, Modern Latin, from Greek amnion "membrane around a fetus," originally "vase in which the blood of a sacrifice was caught," which is of unknown origin; sometimes said to be from amē "bucket," or a diminutive of amnos "lamb."

updated on September 20, 2022

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更新时间:2025/5/1 10:53:35