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early 14c., "to exempt, exonerate, release," from Old French deschargier (12c., Modern French décharger) "to unload, discharge," from Late Latin discarricare, from dis- "do the opposite of" (see dis-) + carricare "load" (see charge (v.)).
Meaning "to unload, to free from" is late 14c. Of weapons, from 1550s. The electrical sense is first attested 1748. Meaning "to fulfill, to perform one's duties" is from c.1400. Related: Discharged; discharging.
late 14c., "relief from misfortune," see discharge (v.). Meaning "release from work or duty" is from early 15c.
discharge dis·charge (dĭs-chärj')
v. dis·charged, dis·charg·ing, dis·charg·es
To emit a substance, as by excretion or secretion.
To release a patient from custody or care.
To generate an electrical impulse. Used of a neuron.
The act of releasing, emitting, or secreting.
A substance that is excreted or secreted.
The generation of an electrical impulse by a neuron.