follow Dictionary.com

What is the X in X-mas?

Jurassic

[joo-ras-ik] /dʒʊˈræs ɪk/
adjective
1.
noting 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.
noun
2.
the Jurassic Period or System.
Origin
1825-1835
1825-35; Jur(a) + -assic, suffix extracted from Triassic; compare French jurassique
Related forms
post-Jurassic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for Jurassic

Jurassic

/dʒʊˈræsɪk/
adjective
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
noun
2.
the Jurassic, the Jurassic period or rock system
Word Origin
C19: from French jurassique, after the Jura (Mountains)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for Jurassic
adj.

in reference to "geological period between the Triassic and the Cretaceous," 1847, from French Jurassique, literally "of the Jura Mountains," between France and Switzerland, whose limestones were laid down during this geological period. Used in English in a literal sense "pertaining to the Jura Mountains" by 1831. The name is said to be from Gaulish *iuris "wooded mountain."

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Jurassic in Science
Jurassic
  (j-rās'ĭk)   
The second and middle period of the Mesozoic Era, from about 208 to 144 million years ago. During this time the supercontinent Pangaea continued to split up and numerous shallow seas inundated the new continents. Dinosaurs were the dominant form of terrestrial animal life, and the earliest birds appeared. Marine life was dominated by ammonites and belemnites, and sponges, corals, bryozoa, and gastropods all flourished. Gymnosperms and cycads were the dominant land plants. See Chart at geologic time.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for Jurassic

Many English speakers likely know this word

Word Value for Jurassic

0
0
Scrabble Words With Friends

Nearby words for jurassic