Depletion

Depletion may refer to:

Environment

 * Resource depletion, decline of resources
 * Gas depletion, decline of oil supply
 * Nutrient depletion, loss of nutrients in a habitat
 * Oil depletion, decline of oil supply
 * Overdrafting, extracting groundwater beyond the equilibrium yield of an aquifer
 * Ozone depletion, a decline in the total amount of ozone in Earth's atmosphere

Physics

 * Depletion force, an effective force in molecular and colloidal systems
 * Depletion region, in semiconductor physics
 * Grain boundary depletion, a mechanism of corrosion

Other uses

 * Depleted uranium
 * Ego depletion, idea that self-control or willpower draws upon a limited pool of mental resources that can be used up
 * Depletion (accounting), an accounting and tax concept used in mining, timber, petroleum, or other similar industries
 * T-cell depletion, process of T cell removal or reduction