adj
Permian
PUR-meern
adj
1
Relating to the final geological period of the Paleozoic era, roughly 299 to 252 million years ago.
"The fossil dates from the Permian period, just before the mass extinction."
How to Use Permian
Learner’s notesIn plain EnglishReferring to the geological period that ended with Earth's largest known mass extinction.
Common pairings
Permian period
Permian extinction
Word Forms
more Permian comparative, Permians plural, most Permian superlative
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The fossil dates from the _____ period, just before the mass extinction.
Etymology
Named after Perm, the Russian region where the rock layers of this era were first studied.