jura

2 definitions found

jura - Collaborative International Dictionary of English v.0.48 :

  Jura \Ju"ra\, prop. n. [F. & L.]
     1. A range of mountains between France and Switzerland.
     [1913 Webster]
  
     2. (Geol.) The Jurassic period. See Jurassic.
        [1913 Webster]

  Jurassic \Ju*ras"sic\, a. (Geol.)
     Of the age of the middle Mesozoic, about 190 to 140 million
     years ago, including, as divided in England and Europe, the
     Lias, O["o]lite, and Wealden; -- named from certain rocks of
     the Jura mountains. It was noted for the predominance of
     dinosaurs on land, and the development of the first birds and
     mammals. -- n. The Jurassic period or formation; -- called
     also the Jura.
     [1913 Webster +PJC]