| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024ca•thod•ic (ka thod′ik, -thō′dik, kə-),USA pronunciation adj. - Electricitypertaining to a cathode or phenomena in its vicinity.
Also, cath•o•dal (kath′ə dl).USA pronunciation ca•thod′i•cal•ly, cath′o•dal•ly, adv. WordReference Random House Learner's Dictionary of American English © 2024cath•ode /ˈkæθoʊd/USA pronunciation n. [countable]- Electricitythe electrode by which current leaves a battery, etc., or the negative terminal of such a cell.
WordReference Random House Unabridged Dictionary of American English © 2024cath•ode (kath′ōd),USA pronunciation n. - Electricitythe electrode or terminal by which current leaves an electrolytic cell, voltaic cell, battery, etc.
- Electricitythe positive terminal of a voltaic cell or battery.
- Electricity, Electronicsthe negative terminal, electrode, or element of an electron tube or electrolytic cell.
- Greek káthodos a way down, equivalent. to kat- cat- + hodós way
- 1825–35
Collins Concise English Dictionary © HarperCollins Publishers:: cathode /ˈkæθəʊd/ n - the negative electrode in an electrolytic cell; the electrode by which electrons enter a device from an external circuit
- the negatively charged electron source in an electronic valve
- the positive terminal of a primary cell
Compare anodeEtymology: 19th Century: from Greek kathodos a descent, from kata- down + hodos waycathodal /kæˈθəʊdəl/, cathodic /kæˈθɒdɪk -ˈθəʊ-/ adj |