Triassic
[ trahy-as-ik ]
/ traɪˈæs ɪk /
|
adjective
noting or pertaining to a period of the Mesozoic Era, occurring from 230 to 190 million years ago and characterized by the advent of dinosaurs and coniferous forests.
noun
Also Tri·as [trahy-uh s] /ˈtraɪ əs/ the Triassic Period or System.
Origin of Triassic
Related forms
post-Tri·as·sic, adjectiveDictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for triassic
British Dictionary definitions for triassic
Triassic
/ (traɪˈæsɪk) /
adjective
of, denoting, or formed in the first period of the Mesozoic era that lasted for 42 million years and during which reptiles flourished
noun
the Triassic or Trias the Triassic period or rock system
Word Origin for Triassic
C19: from Latin trias triad, with reference to the three subdivisions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Science definitions for triassic
Triassic
[ trī-ăs′ĭk ]
The earliest period of the Mesozoic Era, from about 245 to 208 million years ago. During the early part of the Triassic Period the supercontinent Pangaea was located along the equator; by the end of the Triassic it had started to split up. Land life diversified in the Triassic in response to the mass extinctions of the end of the Paleozoic. Conifers, cycads, marine reptiles, dinosaurs, and the earliest mammals first appeared. See Chart at geologic time.
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