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Definition of triassic

triassic

/traɪˈæs.ɪk/
tri · as · sic
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triassic Lexical Profile

triassic Game Scores & Validity

• adjective

1

Relating to or denoting the first period of the Mesozoic era, between the Permian and Jurassic periods, marked by the appearance of the earliest dinosaurs and mammals.

Example

"Paleontologists discovered several well-preserved Triassic fossils embedded in the sandstone cliffs."

• noun

1

The first geological period of the Mesozoic era, spanning from approximately 252 million to 201 million years ago, or the system of rocks deposited during this time.

Example

"Early archosaurs diversified rapidly during the Triassic, eventually giving rise to the first dinosaurs."

• Rhymes for triassic

• Nearby Words

triangular
triangulate
triangulation
triassic
triathlete
triathlon
tribal

Word Origin & Etymology

Coined in 1834 as German 'Trias' by geologist Friedrich August von Alberti from Late Latin 'trias' (triad), referring to the three distinct rock strata (red beds, chalk, and black shale) characteristic of this period in southern Germany.

Cite this Entry

Wordmom. (2026). Definition of Triassic. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/triassic
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