the GNU version of the Collaborative International Dictionary of English
adj. Eternal; everlasting; lasting for an indefinitely long time; immortal; not subject to death. Opposite of mortal.
adj. of or pertaining to an eon.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. of or relating to a geological eon (longer than an era)
adj. continuing forever or indefinitely
Word Usage
"Being and not being came round in endless succession for all save him, into whom all being was resolved, and out of whom it emerged again, as from the vortex of some aeonian"