Cathode
['kæθəʊd] or ['kæθod]
Definition
(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.
Checker: Rudolph--From WordNet
Definition
(n.) The part of a voltaic battery by which the electric current leaves substances through which it passes, or the surface at which the electric current passes out of the electrolyte; the negative pole; -- opposed to anode.
Checked by Ives
Definition
n. the negative pole or electrode of a galvanic battery as opposed to anode: the surface in contact with the negative pole: the object to be coated in electroplating—adj. Cath′odal.
Editor: Nat
Examples
- K is the cathode plate, formed of a concave disk of aluminum, which focuses the rays at a point near the center of the bulb. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- This great physicist had prov ed t hat cathode rays are composed not of negatively charged molecules, as had been supposed, but of much smaller particles or corp uscles. Walter Libby. An Introduction to the History of Science.
- At the anode it appears as a peach blossom glow, and at the cathode it appears as a bluish green light. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
Checked by Danny