'Triassic' definitions:
Definition of 'Triassic'
(from WordNet)
adjective
Of or relating to or denoting the first period of the Mesozoic era
noun
From 230 million to 190 million years ago; dinosaurs, marine reptiles; volcanic activity [syn: Triassic, Triassic period]
Definition of 'Triassic'
From: GCIDE
- Triassic \Tri*as"sic\, a. (Geol.) Of the age of, or pertaining to, the Trias. -- n. The Triassic formation. [1913 Webster]