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Triassic

American  
[trahy-as-ik] / traɪˈæs ɪk /

adjective

  1. 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

  1. Also Trias the Triassic Period or System.

Triassic British  
/ traɪˈæsɪk /

adjective

  1. of, denoting, or formed in the first period of the Mesozoic era that lasted for 42 million years and during which reptiles flourished

"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

noun

  1. the Triassic period or rock system

"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
Triassic Scientific  
/ trī-ăsĭk /
  1. 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.

  2. See Chart at geologic time


Other Word Forms

  • post-Triassic adjective

Etymology

Origin of Triassic

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The fossils uncovered in this study date back about 200 million years to the end of the Triassic Period, a time when what is now the United Kingdom was located in warmer, tropical latitudes.

From Science Daily

The species lived at the end of the Triassic period, during which the first dinosaurs and the ancestors of mammals started to appear, the researchers said.

From Barron's

"The bones of Triassic pterosaurs are small, thin, and often hollow, so they get destroyed before they get fossilised," explained Dr Kligman.

From BBC

The study focused on a previously underexplored region, Polish Basin, located in the Late Triassic time in the in the northern parts of the then supercontinent Pangea.

From Science Daily

The ancestors of dinosaurs were small omnivores, minor players in the Triassic ecosystem.

From Science Magazine