Tri·as·sic /traɪˈæsɪk/
(a.)三疊紀的
Tri·as·sic a. Geol. Of the age of, or pertaining to, the Trias. -- n. The Triassic formation.
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Triassic
n : from 230 million to 190 million years ago; dinosaurs, marine
reptiles; volcanic activity [syn: Triassic period]