Definition of Permian in English:

Permian

adjective

Geology
  • 1Relating to or denoting the last period of the Paleozoic era, between the Carboniferous and Triassic periods.

    • ‘The ancestral archosaurs probably originated some 250 million years or so ago, in the late Permian period.’
    • ‘Similar features have been seen in Permian and Triassic conifer trunks from Antarctica and North America.’
    • ‘Throughout the Permian period the numbers of invertebrate species tends to decrease.’
    • ‘Uppermost Permian and Triassic terrestrial sediments conformably overlie the terminal volcanic rocks.’
    • ‘It happened 252 million years ago, at the boundary of the Permian and Triassic geological ages.’
    1. 1.1The Permian period or the system of rocks deposited during it.

Origin

Late 16th century: from the name of the Russian province Perm, from the extensive development of such strata there.

Pronunciation:

Permian

/ˈpərmēən/