| 单词 | cathode | 
| 释义 | Word Frequency cathode(ˈkæθəʊd) noun   Compare anode 1.  the negative electrode in an electrolytic cell; the electrode by which electrons enter a device from an external circuit  2.  the negatively charged electron source in an electronic valve  3.  the positive terminal of a primary cell Derived forms cathodal (kæˈθəʊdəl), cathodic (kæˈθɒdɪk, -ˈθəʊ-) or cathodical (caˈthodical) adjective Word origin C19: from Greek kathodos a descent, from kata- down + hodos way | 
	
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