Jurassic

American  

[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.

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noun

1. the Jurassic Period or System.

Jurassic British  

/ 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

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noun

1. the Jurassic period or rock system

Jurassic Scientific  

/ j-răs′ĭk /

1. 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.

2. See Chart at geologic time

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Other Word Forms

• post-Jurassic
  adjective

Etymology

Origin of Jurassic

First recorded in 1825–35; Jur(a) + -assic, suffix extracted from Triassic; compare French jurassique

Example Sentences

More footage was shown of Varley, barefoot and wearing a Jurassic Park t-shirt and tartan pyjama bottoms, outside the hospital entrance, minutes after Preston had been declared dead.

From BBC • May 6, 2026

The New Zealander, who starred as Dr Alan Grant in the 1993 blockbuster "Jurassic Park", revealed in a 2023 memoir he was "possibly dying" with stage-three non-Hodgkin lymphoma.

From Barron's • Apr. 29, 2026

Tracks from the Triassic and Jurassic periods are common in Lesotho and nearby regions of South Africa, including the Free State and Eastern Cape.

From Science Daily • Apr. 24, 2026

The Oscar-nominated director and Jurassic Park star is undertaking his first UK tour with his jazz band The Mildred Snitzer Orchestra and will be at The Halls on 28 May.

From BBC • Apr. 14, 2026

Ma glances at the lush tropical landscape and concludes, “This must be the Mesozoic era. Jurassic or Cretaceous period, I’d say, judging from the flora and fauna. What do you think, Jax?”

From "Dragons in a Bag" by Zetta Elliott