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

• Heteromeles arbutifolia
• heteromerous
• heterometabolic
• heterometabolism
• heterometabolous
• heterometaboly
• heteromorphic
• Heteromyidae
• heteronomous
• heteronomy
• heteronym
• heterophil antibody
• heterophil test
• heterophile antibody
• heterophony
• heterophyllous
• heteroplasty
• heteroploid
• heteroploidy
• Heteroptera
• heteropterous insect
• Heteroscelus
• Heteroscelus incanus
• heterosexism
• heterosexual