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Definition of Triassic
1. Noun. From 230 million to 190 million years ago; dinosaurs, marine reptiles; volcanic activity.
Exact synonyms: Triassic Period
Group relationships: Age Of Reptiles, Mesozoic, Mesozoic Era
Generic synonyms: Geological Period, Period
Group relationships: Age Of Reptiles, Mesozoic, Mesozoic Era
Generic synonyms: Geological Period, Period
2. Adjective. Of or relating to or denoting the first period of the Mesozoic era.
Definition of Triassic
1. a. Of the age of, or pertaining to, the Trias.
Definition of Triassic
1. of or pertaining to a certain geologic time period [adj]
Medical Definition of Triassic
1.