discovery, as of error or crime: chance detection of smuggling.
4.
Telecommunications.
a.
rectification of alternating signal currents in a radio receiver.
b.
Also called demodulation.the conversion of an alternating, modulated carrier wave or current into a direct, pulsating current equivalent to the transmitted information-bearing signal.
Origin: 1425–75; late Middle English < Late Latin dētēctiōn- (stem of dētēctiō), equivalent to Latin dētēct(us) (see detect) + -iōn--ion