First Known Use: 1841
Dictionary
Triassic
adjective Tri·as·sic \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
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Origin of TRIASSIC
International Scientific Vocabulary, from Latin trias triad; from the three subdivisions of the European Triassic — more at triad
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