cathode

n. 阴极 [化] 阴极

发音

其它 /ˈkæθ.oʊd/
IN /kæt̪ʰoɖ/

词形变化

cathodes 复数 cathodes

别名

cath cath. kathode

释义与例句

n.
  1. 1.

    An electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows outwards (and thus, electrons flow inwards). It can have either a negative or a positive voltage with respect to anode of the same polarized device (depending on whether the device is a load or a source, respectively).

    阴极

    正极

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  2. 2.

    The electrode at which chemical reduction of cations takes place, usually resulting in the deposition of metal onto the electrode.

    引申义
  3. 3.

    The electrode from which electrons are emitted into a vacuum tube or gas-filled tube.

    商务 工程 物理 电子
  4. 4.

    That electrode of a semiconductor device which is connected to the n-type material of a p-n junction.

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词汇关系

名词

反义词 1

anode

上位词 4

terminal depot terminus electrode

下位词 2

cold cathode photocathode

整体词 9

tube accumulator electron tube galvanic cell storage battery thermionic tube thermionic valve vacuum tube voltaic cell

相关短语

cathode dark space [电] 阴极昱区 cathode dark spaces cathode ray 阴极射线 cathode ray tube [计] 阴极射线管 cathode rays cathode ray tubes [计] 阴极射线管 hot cathode [电] 热阴极 cold cathode [医] 冷阴极

词源

From Ancient Greek κατα- (kata-, “down”) and ὁδός (hodós, “journey, way”), equivalent to Ancient Greek κάθοδος (káthodos, “way down, descent”). Coined by English polymath William Whewell in 1834 for Michael Faraday, who introduced it later that year. By surface analysis, cath- (alternative form of cata-) + -ode.

来源：wiktionary