Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A positively charged electrode, as of an electrolytic cell, storage battery, or electron tube.
  • n. The negatively charged terminal of a primary cell or of a storage battery that is supplying current.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the electrode of an electrochemical cell at which oxidation occurs
  • n. the electrode through which current flows into a device or cell (the positive terminal of an electrolytic cell or the negative terminal of a galvanic cell)
  • n. the terminal through which current flows into a diode when current is in the forward direction regardless of the direction the current is actually flowing

from the GNU version of the Collaborative International Dictionary of English

  • n. 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.

from The Century Dictionary and Cyclopedia

  • n. The positive pole of a voltaic current; that pole at which the current enters an electrolytic cell: opposed to cathode, the point at which it departs.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the negatively charged terminal of a voltaic cell or storage battery that supplies current
  • n. a positively charged electrode by which electrons leave an electrical device

Etymologies

Greek anodos, a way up : ana-, ana- + hodos, way.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek ἄνοδος (anodos, "way up"). (Wiktionary)

Examples

  • The thin anode wires have a diameter of about a tenth of a millimetre and are placed about one or a few millimetres apart.

    Press Release: The 1992 Nobel Prize in Physics

  • On the other hand, it was found that in the silver coulometer when the anode is wrapped with filter paper (as it always was in the earlier researches), too much silver is deposited, or at least the total weight of the precipitate is too large.

    Theodore W. Richards - Nobel Lecture

  • The anode should be a plate of pure silver some 30 square cm. in area and 2 or 3 millimeters in thickness.

    Scientific American Supplement No. 822, October 3, 1891

  • A sheet of copper, termed the anode, is then placed within the tank, parallel with the surface to be plated, known as the cathode, and so mounted that it may be adjusted to or from the iron surface, or cathode.

    Electricity for Boys

  • Note that here the user is interested in the function of heating water and the anode is a component that can help to do this.

    Independent Information Technology and business analysis from IT-Director.com

  • The MIT report explains that in a traditional lithium-ion battery, the lithium ions flow between a negatively charged anode, which is usually graphite, and the positively charged cathode, which is usually cobalt oxide or lithium iron phosphate.

    Computerworld News

  • However, he was able to compensate somewhat for his lack of a classical background by his correspondence with friends, like William Whewell (who, for instance, suggested the terms 'anode' and 'cathode' rather than Faraday's original 'eastode' and 'westode), and the mathematical formulations would come later with Thomson (later called Lord Kelvin) and Maxwell.

    Plain Michael Faraday

  • The electrical storage capacity of a Li-ion battery is limited by how much lithium can be held in the battery’s anode, which is typically made of carbon.

    New Nanowire Battery Holds 10 Times The Charge Of Existing Ones « Isegoria

  • The company markets copper cathodes, copper wire bar, continuous cast copper rod and by-products, such as anode slime

    SiliconIndia.com

  • A new kind of anode developed at DOE's Savannah River National Laboratory is expected to increase the energy density of lithium-ion batteries four-fold-or enough to enable the battery to power an electric car for 300 miles on a single charge.

    Nano Tech Wire

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