dis·pos·a·ble / disˈpōzəbəl/ • adj. 1. (of an article) intended to be used once and then thrown away: disposable diapers a disposable razor. ∎ (of a person or idea) able to be dispensed with; easily dismissed: the poor performer is motivated by the fear that he or she is highly disposable.2. (chiefly of financial assets) readily available for the owner's use as required: he made a mental inventory of his disposable assets.• n. an article designed to be thrown away after use: don't buy disposables, such as razors, cups, and plates.DERIVATIVES: dis·pos·a·bil·i·ty / -ˌpōzəˈbilitē/ n.