| cathodal duration tetanus | An obsolete term for a tetanic contraction occurring on application of the cathode or negative pole, while the circuit is closed. (05 Mar 2000) |
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| cathodal opening clonus | An obsolete term for a clonus produced near a cathode when the flow of current is stopped. (05 Mar 2000) |
| cathodal opening contraction | An obsolete term for the momentary contraction of a muscle under the influence of the negative pole when the circuit is broken. (05 Mar 2000) |
| cathodal opening tetanus | An obsolete term for a tonic contraction in a muscle, to which the cathode is applied; when the circuit is opened, the contraction is suddenly interrupted. (05 Mar 2000) |
| cathode | <chemistry, physics> The electrode in an electrochemical cell toward which cations are drawn and where reduction occurs. The negatively charged electrode in a vacuum tube. (16 Mar 1998) |
| cathode ray | <physics> Electrons emitted from the surface of a cathode in a vacuum tube. (16 Mar 1998) |
| cathode ray tube | An evacuated tube containing a beam of electrons which can be deflected to various parts of a fluorescent screen; used in the cathode ray oscilloscope. (05 Mar 2000) |
| cathode rays | A stream of electrons emitted from the negative electrode (cathode) in a Crookes tube; their bombardment of the anode or the glass wall of the tube gives rise to X-ray's. (05 Mar 2000) |
| cathodic | Of, pertaining to, or emanating from a cathode. Synonym: cathodic. (05 Mar 2000) |
| cathodic protection | <chemistry> The attachment of an active metal to a system to protect the system from corrosion. The active metal serves as the anode, making the metal in the system a cathode. (16 Mar 1998) |
| catholicism | The christian faith, practice, or system of the catholic church, specifically the roman catholic, the christian church that is characterised by a hierarchic structure of bishops and priests in which doctrinal and disciplinary authority are dependent upon apostolic succession, with the pope as head of the episcopal college. (12 Dec 1998) |
| catholysis | Electrolysis with a cathode needle. (05 Mar 2000) |