Definitions of W:
- noun: the 23rd letter of the Roman alphabet
- noun: 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
- noun: the cardinal compass point that is a 270 degrees
- noun: a heavy gray-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
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