二叠纪

Traditional form:

二疊紀

Pinyin (reading):

Erdiéjì

Definitions:

• Permian (geological period 292-250m years ago)

Characters:

• 二 - two; twice
• 叠 - pile; layer; to fold up; to repeat, to duplicate
• 纪 - discipline, age; period, era; record, annal

Traditional characters:

• 二 - two; twice
• 疊 - pile; layer; to fold up; to repeat, to duplicate
• 紀 - discipline, age; period, era; record, annal