Simple Definition of watt

from our Learner's Dictionary

watt

noun

ˈwɑːt How to pronounce watt (audio)
plural watts
: a unit for measuring electrical power
a 40-watt light bulb
—abbr. W

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“Watt.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/watt. Accessed 19 Jun. 2026.

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