depletion

de·ple·tion

noun \di-ˈplē-shən\

Definition of DEPLETION

: the act or process of depleting or the state of being depleted: as a : the reduction or loss of blood, body fluids, chemical constituents, or stored materials from the body (as by hemorrhage or malnutrition) b : a debilitated state caused by excessive loss of body fluids or other constituents