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Definition of: Jurassic
(j
·ras′ik) adjective Geol.
Of or pertaining to a period of the Mesozoic era succeeding the Triassic and followed by the Cretaceous: it was characterized by the dominance of dinosaurian reptiles and the earliest bird forms.
—noun The Jurassic period or corresponding rock system. [<F jurassique, from Jura]
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