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 period

Type of: aeon, eon

• telephonist
• telephony
• telephoto
• telephoto lens
• telephotograph
• telephotography
• teleplay
• teleport
• teleportation
• teleprinter
• teleprocessing
• Teleprompter
• telerobotics
• telescope
• telescope sight
• telescoped
• telescopic
• telescopic sight
• telescopically
• Telescopium
• telescopy
• teleselling
• teletext
• telethermometer
• marsupial mole