See Also: cathode(dictionary)
Cathode ray(medicine)
Cathode(medicine)
cathode(dictionary)
cathode(encyclopedia)
cathode ray(encyclopedia)
cathode ray tube(dictionary)
cathode-ray tube (CRT)(encyclopedia)
cathode (as used in expressions)(encyclopedia)
Cathode rays(medicine)

cathode (iou)



cathode noun. Also kathode. M19.
[Greek kathodos way down, from kata CATA- + hodos way.]
A negative electrode or terminal. Opp. ANODE.
cold cathode: see COLD adjective. hot cathode: see HOT adjective. VIRTUAL cathode.
Comb.: cathode ray a beam of electrons emitted from the cathode of a vacuum tube (cathode-ray oscilloscope: see OSCILLOSCOPE 2; cathode-ray tube, a vacuum tube in which cathode rays produce a luminous image on a fluorescent screen).
cathodal adjective of or pertaining to a cathode L19.