adj. & n.
--adj.
1. intended to be used once and then thrown away (disposable nappies).
2 that can be got rid of, made over, or used.
3 (esp. of financial assets) at the owner's disposal.
--n. a thing designed to be thrown away after one use.
Phrases and idioms:
disposable income income after tax etc.
Derivatives:
disposability n.