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Word: pennsylvanian
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Meaning:
Adjective:
- geology of any of the three geologic epochs (lower, middle and upper) within the Carboniferous period from 318 to 299 million years ago; marked by a high oxygen atmosphere and the rise of reptiles and winged insects.
- of, or pertaining to the state of Pennsylvania.
Source: Wiktionary
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Noun:
- geology Any of the three Pennsylvanian epochs.
- An inhabitant or a resident of the state of Pennsylvania.
Source: Wiktionary
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