| Word | Definitions | Synonyms |
|---|---|---|
| cathode | (noun) a negatively charged electrode that is the source of electrons entering an electrical device | - |
| (noun) the positively charged terminal of a voltaic cell or storage battery that supplies current | - | |
| hydathode | (noun) a pore that exudes water on the surface or margin of a leaf of higher plants | Synonyms: water pore, water stoma |
| photocathode | (noun) a cathode that emits electrons when illuminated | - |