Meaning of solenoid

so•le•noid

Pronunciation: (sō'lu-noid", sol'u-), [key]
— n.
  1. 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 calleda switch controlled by such an arrangement, in which a metal rod moves when the current is turned on: used in automotive starting systems.
  3. a space formed by the intersection of isobaric and isosteric surfaces.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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