Found 2 items, similar to cathode ray.
English → English (WordNet) Definition: cathode ray cathode ray n : a beam of electrons emitted by the cathode of an electrical discharge tube
English → English (gcide) Definition: Cathode ray Cathode \Cath"ode\, n. [Gr. ? descent; ? down + ? 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. [1913 Webster] Cathode ray (Phys.), a kind of ray generated at the cathode in a vacuum tube, by the electrical discharge. [1913 Webster]