Triassic

adjective

Tri·​as·​sic trī-ˈa-sik How to pronounce Triassic (audio)
: of, relating to, or being the earliest period of the Mesozoic era or the corresponding system of rocks marked by the first appearance of the dinosaurs see Geologic Time Table
Triassic noun

Word History

Etymology

International Scientific Vocabulary, from Latin trias triad; from the three subdivisions of the European Triassic — more at triad

First Known Use

1841, in the meaning defined above

Time Traveler
The first known use of Triassic was in 1841

Dictionary Entries Near Triassic

Cite this Entry

“Triassic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Triassic. Accessed 29 Mar. 2023.

Kids Definition

Triassic

adjective
Tri·​as·​sic trī-ˈas-ik How to pronounce Triassic (audio)
: of, relating to, or being the earliest period of the Mesozoic era of geological history marked by the first appearance of dinosaurs
also : relating to the corresponding system of rocks see geologic time
Triassic noun
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