Adjective: aeonian ee'ow-nee-un
- Continuing forever or indefinitely
"the aeonian themes of love and revenge";
- ageless, eonian [N. Amer], eternal, everlasting, perpetual, unending, unceasing, eviternal [archaic]
- Of or relating to a geological eon (longer than an era)
"The aeonian changes in Earth's climate have shaped the planet's surface";
- eonian [N. Amer]