the GNU version of the Collaborative International Dictionary of English
n. The state of being everlasting; endless duration; indefinite duration.
The Century Dictionary and Cyclopedia
n. The state or quality of being everlasting; endlessness or indefinite length of duration; immortality; enduring permanence.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the property of lasting forever
Word Usage
"However, in the course of philosophical discussion the idea of everlastingness has been further refined, and two contrasting concepts can be denoted by it."