Search Result：Precambrian aeon
precambrian aeon 
(TTS Sound)
(TTS Sound)Overview of noun precambrian_aeon
The noun precambrian aeon has 1 sense
- Precambrian, Precambrian eon, Precambrian aeon, Precambrian period -- (the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago)