二叠纪 / 二疊紀

èr​dié​jì

Permian

The Permian period, the last geological period of the Paleozoic era; it occurred approximately 299 to 251 million years ago.

二 (literal) → 二 · èr · two 叠 (literal) → 叠/疊 · dié · to pile up 纪 (literal) → 纪/紀 · jì · era

Changed: simplified, traditional, gloss, definition, pinyin, variant pinyin, variants, separable parts, decomposition

created sense May 20, 2026, 07:57 PM