元古宙 [－－－]

Jyutping jyun4 gu2 zau6
Pinyin yuán gǔ zhòu

Definitions (CC-CEDICT)
  1. pre-Cambrian (geological eon 2500-645m)
Definitions (Wiktionary)
  1. name
    the Proterozoic eon (part of the Precambrian supereon, spanning from 2.5 billion to 541 million years ago)
Examples (粵典–words.hk)
  1. Cantonese
    显生宙、元古宙、太古宙、冥古宙
    顯生宙、元古宙、太古宙、冥古宙
    • Phanerozoic, Proterozoic, Archean, Hadean