• Of or pertaining to the second period of the Mesozoic era, a time still dominated by dinosaurs.
  • Of or pertaining to the people or region near the Jura Mountain Range of Europe.
  • Very old-fashioned and outdated.

Proper Noun

  • The period from 201.3±0.2 to 145 million years ago, after the Triassic and before the Cretaceous; the geologic systems of this period.


Narrower meaning words

  • Lower Jurassic, Middle Jurassic, Upper Jurassic - epochs; series

Broader meaning words


  • Borrowed from French Jurassique, named for the discovery and type location in the Jura Mountains of Switzerland.

Modern English dictionary

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