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 W W /ˈdʌbəljuː/

noun

  1. The 23rd letter of the Roman alphabet  ( double-u , W )
    the 23rd letter of the Roman alphabet
  2. A unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm  ( W , watt )
    a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm
  3. The cardinal compass point that is a 270 degrees  ( due west , W , westward , west )
    the cardinal compass point that is a 270 degrees
     Sail west, and you'll eventually reach the island.
    Sail west, and you'll eventually reach the island.
  4. A heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite  ( atomic number 74 , W , wolfram , tungsten )
    a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
     Tungsten bulbs are commonly used in older lamps.
    Tungsten bulbs are commonly used in older lamps.