齐纳二极管 qínà'èrjíguǎn Zener diode Origin Definitions Defs Strokes Stroke Words Sentences Sents 齐 qí phonetic 纳 nà phonetic 二极管 二極管 èrjíguǎn diode Electronic component with two electrodes that allows current to flow in only one direction; includes both vacuum tubes and semiconductor devices. Also called 二极体 èrjítǐ.