Definitions for jurassicdʒʊˈræs ɪk
Random House Webster's College Dictionary
of or pertaining to a geologic period of the Mesozoic Era, from 190 million to 140 million years ago, characterized by the presence of dinosaurs and the advent of birds and mammals.
(n.)the Jurassic Period or System.
Origin of Jurassic:
1825–35; Jur (a ) +-assic; cf. F jurassique
Jurassic, Jurassic period(adj)
from 190 million to 135 million years ago; dinosaurs; conifers
of or relating to or denoting the second period of the Mesozoic era
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.
The period from 200 to 146 million years ago, after the Triassic and before the Cretaceous; the geologic formations of this period.
Origin: Named for the discovery and type location in the Jura Mountains of Switzerland.
of the age of the middle Mesozoic, including, as divided in England and Europe, the Lias, Oolite, and Wealden; -- named from certain rocks of the Jura mountains
the Jurassic period or formation; -- called also the Jura