Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Subject to use or consumption.
  • adjective Not worth salvaging or reusing.
  • adjective Not strictly necessary; dispensable.
  • adjective Open to sacrifice in the interests of gaining an objective, especially a military one.
  • noun Something expendable.

from The Century Dictionary.

  • That can be expended or consumed by use: as, articles expendable and not expendable.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Able to be expended; not inexhaustible.
  • adjective Designed for a single use; not reusable.
  • adjective Not essential or mandatory in order to achieve a goal.
  • adjective That which is regarded as not worth preserving or saving; able to be sacrificed.
  • noun An expendable person or object; usually used in the plural.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective suitable to be expended
  • adjective (used of funds) remaining after taxes

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin expendere + -able

Examples

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