Search Result：precambrian eon
precambrian eon 
(TTS Sound)
(TTS Sound)Overview of noun precambrian_eon
The noun precambrian eon 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)