单词	menadione
释义	menadione noun men·​a·​di·​one ˌme-nə-ˈdī-ˌōn  -dī-ˈ : a yellow crystalline compound C11H8O2 with the biological activity of natural vitamin K Word History Etymology methyl + napthalene + di- + ketone First Known Use 1941, in the meaning defined above Medical Definition menadione noun men·​a·​di·​one ˌmen-ə-ˈdī-ˌōn, -dī-ˈ  : a yellow crystalline compound C11H8O2 with the biological activity of natural vitamin K called also vitamin K3
随便看	kathenotheism kathenotheist Katherina, Gebel Kathiawar Kathiawari kathisma kathismata Kathmandu kathmandus kathodes kathodic katholikos kati Katik Katin katin katins kations katipo katipos katis Katmai National Park Katmai, Mount katmandu katmandus

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