单词 | epiphragm |
释义 | Word Frequency epiphragm(ˈɛpɪˌfræm) noun a disc of calcium phosphate and mucilage secreted by snails over the aperture of their shells before hibernation Word origin C19: via New Latin from Greek epiphragma a lid, from epiphrassein, from epi- + phrassein to place in an enclosure |
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