created sense approved 太古宙 · tàigǔzhòu · Archaean — "Initial import from upstream dictionary"
太古宙
tàigǔzhòu
Archaean
the Archean geological eon, spanning from roughly 4,000 to 2,500 million years ago
太古 (literal) → 太古 · tàigǔ · remote antiquity 宙 (literal) → 宙 · zhòu · eon
Changed: simplified, traditional, gloss, definition, pinyin, variant pinyin, variants, separable parts, decomposition