watt

Meanings

1. 1
   noun

   the SI derived unit of power, equal to one joule of energy transferred or converted per second; symbol W

   The small sensor consumes less than one watt of power.

Named for Scottish engineer James Watt (1736-1819), whose improvements made steam engines far more efficient. The name was adopted for a unit of power in the late nineteenth century; its SI symbol is W.

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