Jurassic rocks or strata; the Jurassic system. Also attributive, = Jurassic, adj. n.
| 单词 | θ5387 | 
| 释义 | the world > the earth > structure of the earth > age or period > stratigraphic units > 			[noun]		 > secondary or Mesozoic > Jurassic (22)		 Jura1829 Jurassic rocks or strata; the Jurassic system. Also attributive, = Jurassic, adj. n. Jurassic1831 absol. as n. The Jurassic system or the Jurassic period. Subcategories:— 			specific			(20)		  | 
	
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