第三紀 [－－纪]

Jyutping dai6 saam1 gei2
Pinyin dì sān jì

Definitions (CC-CEDICT)
  1. third period
  2. tertiary (geological era since the extinction of the dinosaurs at the Cretaceous-Tertiary boundary 65 million years ago)
Definitions (Wiktionary)
  1. name
    the Tertiary period