n. The state of being endless; eternity or perpetuity
the GNU version of the Collaborative International Dictionary of English
n. The quality of being endless; perpetuity.
The Century Dictionary and Cyclopedia
n. The character of being endless; extension without end or limit; perpetuity; endless duration.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the property of being (or seeming to be) without end
Word Usage
""How they reconcile such an endlessness, which is also such a narrowness, with what I believe is an instinctual need for a hierarchy with meaningful functions, we do not yet know."