the GNU version of the Collaborative International Dictionary of English
n. The quality of being imperishable: indstructibility.
The Century Dictionary and Cyclopedia
n. The character or quality of being imperishable.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the property of being resistant to decay
Word Usage
"The weight, ductility and imperishability of gold, for example, have underpinned its status as a substance of beauty, value and permanence since antiquity."