noun. A negatively charged electrode, as of an electrolytic cell, a storage battery, or an electron tube.

noun. The positively charged terminal of a primary cell or a storage battery that is supplying current.

noun. The negative pole of an electric current: opposed to anelectrode or anode. Also spelled kathode. Also called catelectrode.

noun. 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.

noun. a kind of ray generated at the cathode in a vacuum tube, by the electrical discharge.

noun. the electrode of an electrochemical cell at which reduction occurs

noun. the electrode through which current flows out of a device or cell (the negative terminal of an electrolytic cell or the positive terminal of a galvanic cell)

noun. the terminal through which current flows out of a diode when current is in the forward direction regardless of the direction the current is actually flowing

noun. a negatively charged electrode that is the source of electrons entering an electrical device

noun. the positively charged terminal of a voltaic cell or storage battery that supplies current

"The only difference between these two cells was that in Lenard's cell the electrons were taken from the cathode by light, whereas on the "3-electrode lamp" the cathode is a white-hot filament capable of sending into the vacuum currents of much higher intensity."

cation  

depot  terminal  terminus  

actinic  anode  auroral  cathode ray  digitizing