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 aeon, Precambrian period

Type of: aeon, eon

• notornis
• Notornis mantelli
• Notoryctidae
• Notoryctus
• Notoryctus typhlops
• Notostraca
• Notropis
• Notropis atherinoides
• Notropis cornutus
• Nottinghamshire
• notturno
• notwithstanding
• Nouakchott
• nougat
• nougat bar
• nought
• noughts and crosses
• noumenal
• noumenon
• noun
• noun phrase
• nounal
• nourish
• nourished
• nourishing