PENNSYLVANIAN PERIOD

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

From 310 million to 280 million years ago; warm climate; swampy land

Synonyms:

Pennsylvanian; Pennsylvanian period; Upper Carboniferous; Upper Carboniferous period

Classified under:

Nouns denoting time and temporal relations

Instance hypernyms:

geological period; period (a unit of geological time during which a system of rocks formed)

Holonyms ("Pennsylvanian period" is a part of...):

Carboniferous; Carboniferous period (from 345 million to 280 million years ago)

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