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

• Francoa
• Francoa ramosa
• francolin
• Francophil
• Francophile
• Francophobe
• francophone
• frangibility
• frangible
• frangibleness
• frangipane
• frangipani
• frangipanni
• franglais
• frank
• Highway Code
• highway engineer
• highway robbery
• highway system
• highwayman
• Higi
• hijab
• hijack
• hijacker
• hijacking