disposable
    adj 1: free or available for use or disposition; "every
           disposable piece of equipment was sent to the fire";
           "disposable assets" [ant: nondisposable]
    2: designed to be disposed of after use; "disposable paper cups"
       [ant: nondisposable]
    n 1: an item that can be disposed of after it has been used

Disposable \Dis*pos"a*ble\, a. [From Dispose.]
   Subject to disposal; free to be used or employed as occasion
   may require; not assigned to any service or use.
   [1913 Webster]

         The great of this kingdom . . . has easily afforded a
         disposable surplus.                      --Burke.
   [1913 Webster]

   2. designed to be disposed of after use; -- of articles of
      commerce. The term implies that it is less expensive to
      manufacture a new one than to clean and recycle the used
      item to make it fit for use again; as, disposable dishes;
      disposable diapers; disposable gloves. Opposite of
      reusable.

   Syn: throwaway(predicate), non-reusable.
        [WordNet 1.5]