/ dʒʊˈræsɪk; NAmE / adjective
( geology ) of the second period of the Mesozoic, between the Triassic and the Cretaceous; of the rocks formed during this time
► the Jur·as·sic noun [ sing. ]
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WORD ORIGIN
mid 19th cent.: from French jurassique ; named after the Jura Mountains, in France and Switzerland.