Definitions
1.NounAn electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows inwards (and thus, electrons flow outwards). It can have either a positive or a negative voltage with respect to cathode of the same polarized device (depending on whether the device is a load or a source, respectively).
2.Noun(chemistry) The electrode at which chemical oxidation of anions takes place, usually resulting in the erosion of metal from the electrode.
3.NounThe electrode which collects electrons emitted by the cathode in a vacuum tube or gas-filled tube.
4.NounThat electrode of a semiconductor device which is connected to the p-type material of a p-n junction.