aeonian

a.	1.	Eternal; everlasting; lasting for an indefinitely long time; immortal; not subject to death. Opposite of mortal.
	2.	of or pertaining to an eon.

Adj.	1.	aeonian - of or relating to a geological eon (longer than an era) Synonyms: eonian
	2.	aeonian - lasting for an indefinitely long period of time Synonyms: eonian, eternal, everlasting, lasting

eonian, eternal, everlasting, immortal, lasting