A sudden burst or wave of electrical energy used to stimulate or trigger a response in biological or mechanical systems.
From 'electro-' (Greek 'elektron' meaning amber, relating to electricity) combined with 'impulse' (Latin 'impellere' meaning to drive forward). The term emerged in the 20th century as electrical technology advanced.
Doctors use electroimpulses to restart hearts during cardiac arrests—essentially the body's electrical wiring gets a jump-start, which is why it's called 'defibrillation' in medical settings.
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