Meaning of CATHODE in English



Terminal or electrode at which electrons enter a system, such as an electrolytic cell or an electron tube.

In a battery or other source of direct current , the cathode is the positive terminal. In a passive load it is the negative terminal. In an electron tube, such as a cathode-ray tube , electrons stream off the cathode and travel through the tube toward the anode .

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.