Definition
noun
(physiology) The discharge of an action potential by a neuron.
(medicine) The old technique where fire or extreme heat is used in cautery.
(general)
(1) The process of combustion where a fuel is ignited and combined with oxygen, releasing heat and light.
(2) The act of discharging, especially of a gun.
(3) The fuel or firewood or coal.
Supplement
Word origin: Middle English fir, from Old English fȳr.
See also: fire
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