expendability

expendable

[ik-spen-duh-buhl]
adjective
1.
capable of being expended.
2.
(of an item of equipment or supply) consumed in use or not reusable.
3.
considered to be not worth keeping or maintaining.
4.
Military. (of personnel, equipment, or supplies) capable of being sacrificed in order to accomplish a military objective.
noun
5.
Usually, expendables. an expendable person or thing.

Origin:
1795–1805; expend + -able

expendability, noun
nonexpendable, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
expendable (ɪkˈspɛndəbəl)
 
adj
1.  that may be expended or used up
2.  not essential; not worth preserving
3.  able to be sacrificed to achieve an objective, esp a military one
 
n
4.  something that is expendable
 
expenda'bility
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

expendable
1805, from expend + -able.
Online Etymology Dictionary, © 2010 Douglas Harper
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