cath·ode /ˈkæθˌod/ 名詞
Cath·ode n. 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.
Cathode ray Phys., a kind of ray generated at the cathode in a vacuum tube, by the electrical discharge.
n 1: a negatively charged electrode that is the source of
electrons in an electrical device [ant: anode]
2: the positively charged terminal of a voltaic cell or storage
battery that supplies current [ant: anode]