the electrode or terminal by which current enters an electrolytic cell, voltaic cell, battery, etc.
the negative terminal of a voltaic cell or battery.
the positive terminal, electrode, or element of an electron tube or electrolytic cell.

1825–35; < Greek ánodos way up, equivalent to an- an-3 + hodós way, road Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To anode
World English Dictionary
anode (ˈænəʊd)
1.  the positive electrode in an electrolytic cell
2.  Also called (esp US): plate the positively charged electrode in an electronic valve
3.  Compare cathode the negative terminal of a primary cell
[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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

1834, coined from Gk. anodos "way up," from ana "up" + hodos "way" (see cede). Proposed by the Rev. William Whewell (17941866), Eng. polymath, and published by Eng. chemist and physicist Michael Faraday (1791-1867). So called from the path the electrical current was thought
to take. Anodize is recorded from 1931.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
anode   (ān'ōd')  Pronunciation Key 
  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.
Cite This Source
Example sentences
Space-saving zinc-air power cells, for example, use air to activate a zinc
Different materials for the anode and cathode, of course, affect this
  back-and-forth movement.
When a battery charges, energy moves between its cathode and anode.
These ions reach the anode and begin to oxidize the zinc--a reaction that
  produces current through the release of electrons.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature