第三纪
Traditional form:
第三紀
Pinyin (reading):
dìsānjì
Definitions:
- third period
- tertiary (geological era since the extinction of the dinosaurs at the Cretaceous-Tertiary boundary 65 million years ago)
Characters:
- 第 - sequence, number; grade, degree; particle prefacing an ordinal
- 三 - three
- 纪 - discipline, age; period, era; record, annal
Traditional characters: