Definition of Permo–Triassic in English:


Syllabification: Per·mo–Tri·as·sic
Pronunciation: /ˌpərmō ˌtrīˈasik


  • 1Of, relating to, or occurring at the boundary of the Permian and Triassic periods, about 245 million years ago. Mass extinctions occurred at this time, marking the end of the era.
  • 1.1Of or relating to the Permian and Triassic periods or rock systems considered as a unit.
  • 1.2 (as noun the Permo–Triassic or Permo–Trias) The Permian and Triassic periods together or the system of rocks deposited during them.

More definitions of Permo–Triassic

Definition of Permo–Triassic in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
(in science fiction) navigation in outer space