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单词 umbilicus
释义
um·bil·i·cus (ŭm-bĭlĭ-kəs, ŭmbə-līkəs)
n. pl. um·bil·i·ci (-sī)
1. See navel.
2. Biology A small opening or depression similar to a navel, as the hollow at the base of the shell of some gastropod mollusks, one of the openings in the shaft of a feather, or the hilum of a seed.

[Latin umbilīcus; see nobh- in the Appendix of Indo-European roots.]
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更新时间:2025/3/22 10:12:57