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anode

[an-ohd] /ˈæn oʊd/
noun
1.
the electrode or terminal by which current enters an electrolytic cell, voltaic cell, battery, etc.
2.
the negative terminal of a voltaic cell or battery.
3.
the positive terminal, electrode, or element of an electron tube or electrolytic cell.
Origin
1825-1835
1825-35; < Greek ánodos way up, equivalent to an- an-3 + hodós way, road
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for anodes

anode

/ˈænəʊd/
noun
1.
the positive electrode in an electrolytic cell
2.
Also called (esp US) plate. the positively charged electrode in an electronic valve
3.
the negative terminal of a primary cell Compare cathode
Derived Forms
anodal (eɪˈnəʊdəl), anodic (əˈnɒdɪk) adjective
Word Origin
C19: from Greek anodos a way up, from hodos a way; alluding to the movement of the current to or from the positive pole
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for anodes

anode

n.

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.

Online Etymology Dictionary, © 2010 Douglas Harper
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anodes in Science
anode
  (ān'ōd')   
  1. The positive electrode in an electrolytic cell, toward which negatively charged particles are attracted. The anode has a positive charge because it is connected to the positively charged end of an external power supply.

  2. The positively charged element of an electrical device, such as a vacuum tube or a diode, to which electrons are attracted.

  3. The negative electrode of a voltaic cell, such as a battery. The anode gets its negative charge from the chemical reaction that happens inside the battery, not from an external source. Compare cathode.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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