rotor [roh-ter] ExamplesWord Origin noun

  1. Electricity. a rotating member of a machine.Compare stator(def 1).
  2. Aeronautics. a system of rotating airfoils, as the horizontal ones of a helicopter or of the compressor of a jet engine.
  3. any of a number of tall, cylindrical devices mounted on a special ship (rotor ship) and rotated in such a way that the Magnus effect of wind impinging on the cylinders is used to drive and maneuver the vessel.
  4. (in a self-winding watch) a weight eccentrically mounted on an arbor for keeping the mainspring wound.

Origin of rotor First recorded in 1873; short for rotator Examples from the Web for rotor Contemporary Examples of rotor

  • So serious is this heat that it can distort a major APUS engine component, the rotor shaft, and cause significant damage.

    Planes in Flames: Why Does It Keep Happening?

    Clive Irving

    July 15, 2013

  • Historical Examples of rotor

  • These dummy pistons are shown at the near end of the rotor in Fig. 35.

    Steam Turbines

    Hubert E. Collins

  • In this A is the cylinder or casing, B the spindle or rotor, and C the blades.

    Steam Turbines

    Hubert E. Collins

  • The rotor of a variometer or variocoupler is a rotating coil.

    The Radio Amateur’s Hand Book

    A. Frederick Collins

  • There are rings of blades round the rotor, tightly fixed to its surface.

    The Romance of War Inventions

    Thomas W. Corbin

  • Then you ask Tom to send a plane back to drop off my cap and rotor.

    The Scarlet Lake Mystery

    Harold Leland Goodwin

  • British Dictionary definitions for rotor rotor noun

    1. the rotating member of a machine or device, esp the armature of a motor or generator or the rotating assembly of a turbineCompare stator
    2. a device having blades radiating from a central hub that is rotated to produce thrust to lift and propel a helicopter
    3. the revolving arm of the distributor of an internal-combustion engine
    4. a violent rolling wave of air occurring in the lee of a mountain or hill, in which the air rotates about a horizontal axis

    Word Origin for rotor C20: shortened form of rotator Word Origin and History for rotor n.

    1873, irregular shortening of rotator (see rotate (v.)), originally in mathematics. Mechanical sense is attested from 1903; specifically of helicopters from 1930.

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