 pennsylvanian |
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| 1. | [ noun ] (geology) from 280 million to 310 million years ago; warm climate; swampy land | |
| Synonyms: | Upper_Carboniferous Upper_Carboniferous_period Pennsylvanian_period | |
| Related terms: | period Carboniferous | |
| 2. | [ noun ] a resident of Pennsylvania | |
| Related terms: | American | |
| Similar spelling: |
Pennsylvania |
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