Triassic

Tri·as·sic

adj \trī-ˈa-sik\

Definition of TRIASSIC

: 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

Origin of TRIASSIC

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

First Known Use: 1841

Rhymes with TRIASSIC

Jurassic, Liassic, thalassic