a positively charged electrode by which electrons leave an electrical device | conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases |
the negatively charged terminal of a voltaic cell or storage battery that supplies current | an electric railway operating below the surface of the ground (usually in a city) |
| electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
| (anatomy) any hollow cylindrical body structure |
| a hollow cylindrical shape |