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单词 jurassic
释义

WordReference Random House Unabridged Dictionary of American English © 2024
Ju•ras•sic  ( jŏŏ rasik),USA pronunciation [Geol.]
adj. 
  1. Geologynoting or pertaining to a period of the Mesozoic Epoch, occurring from 190 to 140 million years ago and characterized by an abundance of dinosaurs and the advent of birds and mammals. See table under geologic time. 

n. 
  1. Geologythe Jurassic Period or System.
  • 1825–35; Jur(a) + -assic, suffix extracted from Triassic; compare French jurassique

Collins Concise English Dictionary © HarperCollins Publishers::
Jurassic /dʒʊˈræsɪk/ adj
  1. of, denoting, or formed in the second period of the Mesozoic era, between the Triassic and Cretaceous periods, lasting for 55 million years during which dinosaurs and ammonites flourished
n
  1. the Jurassicthe Jurassic period or rock system
Etymology: 19th Century: from French jurassique, after the Jura (Mountains)
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