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Mississippian 音标拼音: [m,ɪsɪs'ɪpiən] a. 密西西比河的
n. 密西西比州人 密西西比河的密西西比州人 Mississippian n 1: from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects [synonym: {Mississippian}, {Missippian period}, {Lower Carboniferous}, {Lower Carboniferous period}] 2: a native or resident of Mississippi Mississippian \Mississippian\ prop. n.
1. A geological period extending from from 310 million to 345 million years ago; it was associated with an increase of land areas, the presence of primitive ammonites, and emergence of winged insects; called also {Missippian period} and {Lower Carboniferous period}. Syn: Missippian period, Lower Carboniferous, Lower Carboniferous period. [WordNet 1.5] 2. A resident of Mississippi. [WordNet 1.5]
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