1. The eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
   - Precambrian, Precambrian eon, Precambrian aeon

Type of: aeon, eon

• raunchy
• rauvolfia
• rauwolfia
• Rauwolfia serpentina
• ravage
• ravaged
• ravager
• ravaging
• rave
• rave-up
• ravehook
• ravel
• ravel out
• ravelin
• raveling
• ravelling
• raven
• ravenala
• Ravenala madagascariensis
• ravener
• ravening
• Ravenna
• Ravenna grass
• ravenous
• ravenously