1. Of or relating to a geological eon (longer than an era)
   - eonian [N. Amer] 
2. Continuing forever or indefinitely
   - ageless, eonian [N. Amer], eternal, everlasting, perpetual, unending, unceasing

See also: aeon, lasting, permanent

• telescope sight
• telescoped
• telescopic
• telescopic sight
• telescopically
• Telescopium
• telescopy
• teleselling
• teletext
• telethermometer
• marsupial mole
• marsupial mouse
• marsupial rat
• Marsupialia
• marsupium
• mart
• Marta Brigit Nilsson
• martagon
• martello tower
• marten
• marten cat
• martensite
• Martes
• Martes americana
• Martes foina