anode

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.


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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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