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armature - 5 dictionary results

ar⋅ma⋅ture

[ahr-muh-cher]
–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
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.]

Armature

Ar"ma*ture\, n. [L. armatura, fr. armare to arm: cf. F. armature. See Arm, v. t., Armor.]

1. Armor; whatever is worn or used for the protection and defense of the body, esp. the protective outfit of some animals and plants.

2. (Magnetism) A piece of soft iron used to connect the two poles of a magnet, or electro-magnet, in order to complete the circuit, or to receive and apply the magnetic force. In the ordinary horseshoe magnet, it serves to prevent the dissipation of the magnetic force.

3. (Arch.) Iron bars or framing employed for the consolidation of a building, as in sustaining slender columns, holding up canopies, etc. --Oxf. Gloss.

Armature

Ar"ma*ture\, n. (Elec.) That part of a dynamo or electric generator or of an electric motor in which a current is induced by a relatively moving magnetic field. The armature usually consists of a series of coils or groups of insulated conductors surrounding a core of iron.
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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