a. [ Gr. &unr_;. ] Eternal; everlasting; lasting for an indefinitely long time; immortal; not subject to death. Opposite of mortal. “Æonian hills.” Tennyson. Syn. -- eonian [ 1913 Webster + WordNet 1.5 ]
(adj) continuing forever or indefinitely, Syn. eonian, unceasing, eternal, perpetual, aeonian, everlasting, unending, Example:the ageless themes of love and revenge; eternal truths; life everlasting; hell's perpetual fires; the unending bliss of heaven