cathode
IPA: kˈæθoʊd
noun
- (electricity) An electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows outwards (and thus, electrons flow inwards). It can have either a negative or a positive voltage with respect to anode of the same polarized device (depending on whether the device is a load or a source, respectively).
- (chemistry, by extension) The electrode at which chemical reduction of cations takes place, usually resulting in the deposition of metal onto the electrode.
- (electronics) The electrode from which electrons are emitted into a vacuum tube or gas-filled tube.
- (electronics) That electrode of a semiconductor device which is connected to the n-type material of a p-n junction.
Advertisement
Examples of "cathode" in Sentences
- The cathode is the negative electrode.
- Copper is the cathode and zinc the anode.
- An envelope encloses the dynodes and the cathode.
- The cathodes of the cell alternate with the anodes.
- The anode is disposed in the cell above the cathode.
- In this case copper is the cathode and zinc the anode.
- The cathode and the focus electrode are interconnected.
- The nozzle is the cathode, and the electrode is the anode.
- The nature of the new cathode is proprietary at this time.
- The anode is positioned to face the opening of the cathode.
Advertisement
Advertisement