单词 | protegulum |
释义 | protegulum/prə(ʊ)ˈtɛɡjʊləm/Zoology noun In brachiopods: the initial or embryonic form of the shell, or of each valve of the shell. OriginLate 19th century. From pro- + classical Latin tēgulum roofing from tegere to cover + -ulum. |
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