三叠纪

Traditional form:

三疊紀

Pinyin (reading):

Sāndiéjì

Definitions:

• Triassic (geological period 250-205m years ago)

Characters:

• 三 - three
• 叠 - pile; layer; to fold up; to repeat, to duplicate
• 纪 - discipline, age; period, era; record, annal

Traditional characters:

• 三 - three
• 疊 - pile; layer; to fold up; to repeat, to duplicate
• 紀 - discipline, age; period, era; record, annal