WordNet (r) 3.0 (2006):
eonian adj 1: of or relating to a geological eon (longer than an era) [syn: eonian, aeonian] 2: continuing forever or indefinitely; "the ageless themes of love and revenge"; "eternal truths"; "life everlasting"; "hell's perpetual fires"; "the unending bliss of heaven" [syn: ageless, aeonian, eonian, eternal, everlasting, perpetual, unending, unceasing]