单词	monocotyledon
释义	monocotyledon noun mono·​cot·​y·​le·​don ˌmä-nə-ˌkä-tə-ˈlē-dᵊn  plural monocotyledons : any of a class or subclass (Liliopsida or Monocotyledoneae) of chiefly herbaceous angiospermous plants having an embryo with a single cotyledon, usually parallel-veined leaves, and floral organs arranged in cycles of three called also monocot compare dicotyledon monocotyledonous ˌmä-nə-ˌkä-tə-ˈlē-dᵊn-əs  adjective Word History Etymology ultimately from New Latin mon- + cotyledon cotyledon First Known Use circa 1727, in the meaning defined above Kids Definition monocotyledon noun mono·​cot·​y·​le·​don ˌmä-nə-ˌkä-tə-ˈlē-dᵊn  : a flowering plant (as a palm tree or grass) having an embryo with a single cotyledon
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