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solenoid

[soh-luh-noid, sol-uh-] /ˈsoʊ ləˌnɔɪd, ˈsɒl ə-/
noun
1.
Electricity. an electric conductor wound as a helix with small pitch, or as two or more coaxial helices, so that current through the conductor establishes a magnetic field within the conductor.
2.
Also called solenoid switch. a switch controlled by such an arrangement, in which a metal rod moves when the current is turned on: used in automotive starting systems.
3.
Meteorology. a space formed by the intersection of isobaric and isosteric surfaces.
Origin
1825-1835
1825-35; < French solénoïde < Greek sōlḗn pipe, channel + French -oïde -oid
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for solenoid-switch

solenoid

/ˈsəʊlɪˌnɔɪd/
noun
1.
a coil of wire, usually cylindrical, in which a magnetic field is set up by passing a current through it
2.
a coil of wire, partially surrounding an iron core, that is made to move inside the coil by the magnetic field set up by a current: used to convert electrical to mechanical energy, as in the operation of a switch
3.
such a device used as a relay, as in a motor vehicle for connecting the battery directly to the starter motor when activated by the ignition switch
Derived Forms
solenoidal, adjective
solenoidally, adverb
Word Origin
C19: from French solénoïde, from Greek sōlēn a pipe, tube
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for solenoid-switch

solenoid

n.

"coil of insulated wire carrying an electrical current and having magnetic properties," 1827, from French solénoïde, from Greek solenoeides "pipe-shaped," from solen "pipe, channel" + comb. form of eidos "form, shape" (see -oid). Related: Solenoidal.

Online Etymology Dictionary, © 2010 Douglas Harper
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solenoid-switch in Science
solenoid
  (sō'lə-noid')   

A coil of wire that acts as an electromagnet when electric current is passed through it, often used to control the motion of metal objects, such as the switch of a relay.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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