Meaning of CATHODE in English


n. (also kathode) Electr.

1. the negative electrode in an electrolytic cell or electronic valve or tube.

2 the positive terminal of a primary cell such as a battery (opp. ANODE).

Phrases and idioms:

cathode ray a beam of electrons emitted from the cathode of a high-vacuum tube. cathode-ray tube a high-vacuum tube in which cathode rays produce a luminous image on a fluorescent screen.


Abbr.: CRT.


cathodal adj. cathodic adj.

Etymology: Gk kathodos descent f. kata down + hodos way

Oxford English vocab.      Оксфордский английский словарь.