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Crossword clues for anode

Longman Dictionary of Contemporary English
▪ A battery is connected to the anode and cathode via leads A and C respectively.
▪ Alpha lipoprotein the fastest band, migrates the closest to the anode followed by prebeta and beta lipoproteins.
▪ An outer cylinder of platinum was used as the anode, with a rod of palladium on its axis as the cathode.
▪ It smashed against the rusted freight car behind her, shattering the glass exterior and buckling the sensitive anode.
▪ On average, the electrons travel from the cathode to the anode.
▪ One would expect this to occur most readily when the anode and cathode spacing was small.
▪ The electrons necessary for this reduction are produced at the anode.
▪ The metal is thereby stripped off the anode.
The Collaborative International Dictionary

Anode \An"ode\, n. [Gr. ? up + ? way.] (Elec.) The positive pole of an electric battery, or more strictly the electrode by which the current enters the electrolyte on its way to the other pole; -- opposed to cathode.

Douglas Harper's Etymology Dictionary

1834, coined from Greek anodos "way up," from ana "up" (see ana-) + hodos "way" (see cede). Proposed by the Rev. William Whewell (1794-1866), English polymath, and published by English chemist and physicist Michael Faraday (1791-1867). So called from the path the electrical current was thought to take. Related: Anodic.


n. 1 (context electricity English) An electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows inwards (and thus, electrons flow outwards). It usually, but not always, has a negative voltage. 2 (context chemistry by extension English) The electrode at which chemical oxidation of anions takes place, usually resulting in the erosion of metal from the electrode. 3 (context electronics English) The electrode which collects electrons emitted by the cathode in a or 4 (context electronics English) That electrode of a semiconductor device which is connected to the p-type material of a p-n junction.

  1. n. a positively charged electrode by which electrons leave an electrical device [ant: cathode]

  2. the negatively charged terminal of a voltaic cell or storage battery that supplies current [ant: cathode]


An anode is an electrode through which conventional current flows into a polarized electrical device. A common mnemonic is ACID for "anode current into device". The direction of (positive) electric current is opposite to the direction of electron flow: (negatively charged) electrons flow out the anode to the outside circuit.

The polarity of voltage on an anode with respect to an associated cathode varies depending on the device type and on its operating mode. In the following examples, the anode is negative in a device that provides power, and positive in a device that consumes power:

  • In a discharging battery or galvanic cell (diagram at right), the anode is the negative terminal because it is where current flows into "the device" (i.e. the battery cell). This inward current is carried externally by electrons moving outwards, negative charge flowing in one direction being electrically equivalent to positive charge flowing in the opposite direction.
  • In a recharging battery, or an electrolytic cell, the anode is the positive terminal, which receives current from an external generator. The current through a recharging battery is opposite to the direction of current during discharge; in other words, the electrode which was the cathode during battery discharge becomes the anode while the battery is recharging.
  • In a diode, the anode is the positive terminal at the tail of the arrow symbol (flat side of the triangle), where current flows into the device. Note electrode naming for diodes is always based on the direction of the forward current (that of the arrow, in which the current flows "most easily"), even for types such as Zener diodes or solar cells where the current of interest is the reverse current.
  • In a cathode ray tube, the anode is the positive terminal where electrons flow out of the device, i.e., where positive electric current flows in.

Usage examples of "anode".

The entire pump is placed in a strong magnetic field, and a potential of about five kilovolts is impressed between the cathodes and the anode to accelerate electrons present in the residual gas toward the anode.

These chemists electrolyse either pure calcium chloride, or a mixture of this salt with fluorspar, in a graphite vessel which serves as the anode.

The whole operation took only fifteen minutes, and the shiny new screws were fully attached, and new protective anodes set in place.

Before they could use the Janus Gate to try to rescue Captain Kirk from his own past, before Sulu and Chekov had even been retrieved from the healing chamber where the Janus Gate had sent them, a horde of metallic insects had plunged down into their midst, using metallic claws with stinging electrical anodes to herd them all to the edge of the cavern.

The San Shin Building was one of the few anodes on which the various occupying powers collected, and one could feel the reserve and mistrust underlying their superficial camaraderie.

Also the in-phase voltage can not better be obtained than by exciting the phasing anode with some of the main-line power.

The jar of aqua regia has been capped off now, and a variety of anodes, cathodes, and other working substances are suspended in it, held in place by clamps of hammered gold.

The fluorides react with the carbon anodes to form polyfluorocarbons, which are carcinogenic.

Overall, smelters using prebaked anodes are about 3% more energy efficient.