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armature

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ar⋅ma⋅ture

  [ahr-muh-cher]
Use armature in a Sentence
–noun
1. armor.
2. Biology. the protective covering of an animal or plant, or any part serving for defense or offense.
3. Electricity.
a. the part of an electric machine that includes the main current-carrying winding and in which the electromotive force is induced.
b. the pivoted part of an electric device, as a buzzer or relay, that is activated by a magnetic field.
c. the iron or steel applied across the poles of a permanent magnet to close it, or across the poles of an electromagnet to transmit a mechanical force.
4. Sculpture. a skeletal framework built as a support on which a clay, wax, or plaster figure is constructed.
Origin:
1535–45; (< MF) < L armātūra an outfit, armor, equiv. to armāt(us) equipped (see arm 2 , -ate 1 ) + -ūra -ure
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ar·ma·ture   (är'mə-chŏŏr', -chər)   
n.  

  1. Electricity

    1. The rotating part of a dynamo, consisting essentially of copper wire wound around an iron core.

    2. The moving part of an electromagnetic device such as a relay, buzzer, or loudspeaker.

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

  2. Biology A protective covering, structure, or organ of an animal or a plant, such as teeth, claws, thorns, or the shell of a turtle.

  3. A framework serving as a supporting core for the material that is used to make a sculpture.


[Middle English, armor, from Old French, from Latin armātūra, equipment, from armātus, past participle of armāre, to arm; see arm2.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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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.


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