单词	Pennsylvanian
释义	Pennsylvanian adjective Penn·​syl·​va·​nian ˌpen(t)-səl-ˈvā-nyən  -nē-ə-n 1 : of or relating to Pennsylvania or its people 2 : of, relating to, or being the period of the Paleozoic era in North America between the Mississippian and Permian or the corresponding system of rocks see Geologic Time Table Pennsylvanian noun Word History First Known Use 1698, in the meaning defined at sense 1
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