Cathode
Cathode , noun
[Greek {not transcribed} descent; {not transcribed} down + {not transcribed} way.]
(Physics) The part of a voltaic battery by which the electric current leaves substances through which it passes, or the surface at which the electric current passes out of the electrolyte; the negative pole; -- opposed to anode. — Faraday
Collocations (1)
Cathode ray (Physics) , a kind of ray generated at the cathode in a vacuum tube, by the electrical discharge<-- X-ray -->.