pennsylvanian

from WordNet (r) 3.0 (2006)

Pennsylvanian
    n 1: from 310 million to 280 million years ago; warm climate;
         swampy land [syn: {Pennsylvanian}, {Pennsylvanian period},
         {Upper Carboniferous}, {Upper Carboniferous period}]
    2: a native or resident of Pennsylvania [syn: {Pennsylvanian},
       {Keystone Stater}]

from The Collaborative International Dictionary of English v.0.48

Pennsylvanian \Pennsylvanian\ prop. n.
   The geological period from 280 million to 310 million years
   ago; -- it was characterized by a warm climate and abundance
   of swampy land.

   Syn: Pennsylvanian period, Upper Carboniferous, Upper
        Carboniferous period.
        [WordNet 1.5]

   2. A resident of the state of Pennsylvania.
      [WordNet 1.5]