Triassic

[ trahy-as-ik ]

/ traɪˈæs ɪk /

Geology

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-uhs] /ˈtraɪ əs/ the Triassic Period or System.

Origin of Triassic

1835–45; Trias the three-part series of strata characterizing the period (<German <Greek triás;see triad) + -ic

OTHER WORDS FROM Triassic

post-Tri·as·sic, adjective

Words nearby Triassic

triannual, triapsidal, triarchy, triaryl, triarylmethane dye, Triassic, triathlete, triathlon, triatic stay, Triatoma, triatomic

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for Triassic

In the Triassic period the exuberance of reptilian life which marked the Permian was continued.
The Outline of Science, Vol. 1 (of 4)|J. Arthur Thomson
They rest unconformably on the Triassic sandstones and the older rocks of the region.
The Elements of Geology|William Harmon Norton
These reptiles occur chiefly in deposits of Triassic and Permian age.
The Vertebrate Skeleton|Sidney H. Reynolds
A genus founded on the largest footprints of the Triassic Sandstones of Connecticut.
The Ancient Life History of the Earth|Henry Alleyne Nicholson

The Triassic rocks rest unconformably on all older formations within the county.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8|Various

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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific 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.

单词	triassic
释义	Triassic [ trahy-as-ik ] / traɪˈæs ɪk / Geology 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-uhs] /ˈtraɪ əs/ the Triassic Period or System. Origin of Triassic 1835–45; Trias the three-part series of strata characterizing the period (<German <Greek triás;see triad) + -ic OTHER WORDS FROM Triassic post-Tri·as·sic, adjective Words nearby Triassic triannual, triapsidal, triarchy, triaryl, triarylmethane dye, Triassic, triathlete, triathlon, triatic stay, Triatoma, triatomic Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for Triassic In the Triassic period the exuberance of reptilian life which marked the Permian was continued. The Outline of Science, Vol. 1 (of 4)\|J. Arthur Thomson They rest unconformably on the Triassic sandstones and the older rocks of the region. The Elements of Geology\|William Harmon Norton These reptiles occur chiefly in deposits of Triassic and Permian age. The Vertebrate Skeleton\|Sidney H. Reynolds A genus founded on the largest footprints of the Triassic Sandstones of Connecticut. The Ancient Life History of the Earth\|Henry Alleyne Nicholson The Triassic rocks rest unconformably on all older formations within the county. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8\|Various 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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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