armature

Science Dictionary
armature   (är'mə-chər)  Pronunciation Key 
  1. The part of an electric motor or generator that consists of wire wound around an iron core and carries an electric current. In motors and generators using direct current, the armature rotates within a magnetic field; in motors and generators using alternating current a magnetic field is rotated about the armature.

  2. A piece of soft iron connecting the poles of a magnet.

  3. The part of an electromagnetic device, such as a relay or loudspeaker, that moves or vibrates.


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