expendable /ɪkˈspɛndəbəl/adjective 4noun 1forms 3 adjective4 •Able to be expended; not inexhaustible.Oil and other expendable resources are frequently the subject of military disputes. •Not essential or mandatory in order to achieve a goal.The research department was deemed expendable, and its funding was not renewed. •Regarded as not worth preserving or saving; able to be sacrificed.In the internecine rivalries of large corporations, whole departments may become expendable in the execution of one executive's power play. •Designed for a single use; not reusable.The anti-aircraft rocket is fired from an expendable launch platform. noun1 •An expendable person or object; usually used in the plural.Private Johnson was afraid the Lieutenant considered him an expendable, since he was always picked as point man. formsexpendables · more expendable · most expendable