the dark region between the anode glow and the anode in a vacuum tube, occurring when the pressure is low.
- Anode glow
the luminous region between the positive column and the anode dark space in a vacuum tube, occurring when the pressure is low.
- Anode ray
. a stream of positive ions traveling from a metallic anode to the cathode in a gas-discharge tube.
- Anode resistance
(of a vacuum tube at a given level of output) the ratio of a small change in voltage of the anode to the corresponding small change in anode current.
to coat (a metal, especially magnesium or aluminum) with a protective film by chemical or electrolytic means. verb to coat (a metal, such as aluminium or magnesium) with a protective oxide film by electrolysis v. 1931, from anode + -ize. Related: Anodized; anodizing.