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Discharge may refer to

Expel or let go

• Discharge, the act of firing a gun
• Discharge, or termination of employment, the end of an employee's duration with an employer
• Military discharge, the release of a member of the armed forces from service

Flow

• Discharge (hydrology), the amount of water flowing through the channel
  • Effluent released into a river or sea
  • Groundwater discharge, the volumetric flow rate of groundwater through an aquifer
• Discharging method (discrete mathematics) is a proof technique in discrete mathematics
• Electric discharge:
  • Corona discharge, a type of electric current
  • Direct-current discharge, a plasma
  • Discharger, an electrical device that releases stored energy
    • Battery discharging
    • Static discharger, a device used on airplanes to maintain use of electrical equipment
  • Electrostatic discharge, sudden and momentary electric current flows between two objects
    • Dielectric barrier discharge, the electrical discharge between two electrodes separated by an insulating dielectric barrier
  • Gas-discharge lamp, a light bulb that includes a discharge gas
  • Partial discharge, a temporary breakdown of electrical insulation

Government and Law

• Discharge (sentence), a criminal sentence where no punishment is imposed
• Bankruptcy discharge, the injunction that bars acts to enforce certain debts
• Discharge petition, the process of bringing a bill out of committee to the floor for a vote without the cooperation of leadership

Healthcare

• Discharge, the flow of fluids from certain parts of the body:
  • Menstruation or other vaginal discharge
  • Mucopurulent discharge, the emission or secretion of fluid containing mucus and pus
  • Nipple discharge, the release of fluid from the nipples of the breasts
• Emotional discharge, in co-counselling, the ways in which pent-up emotional hurt can be released, e.g. via crying, laughter, etc.
• Patient discharge, the formal ending of inpatient care

Music

• Discharge (album), a self-titled album by Discharge released in 2002
• Discharge (band), British hardcore punk band
• "Discharge", a song by Anthrax from Persistence of Time