Hypertext Webster Gateway: "Pennsylvanian"
From WordNet (r) 1.7 (wn)
Pennsylvanian
n 1: from 280 million to 310 million years ago; warm climate;
swampy land [syn: {Pennsylvanian}, {Pennsylvanian period},
{Upper Carboniferous}, {Upper Carboniferous period}]
2: a resident of Pennsylvania [syn: {Pennsylvanian}]
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