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watt-second

or watt·sec·ond

[wot-sek-uh nd]
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noun
  1. a unit of energy equal to the energy of one watt acting for one second; the equivalent of one joule.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

watt-second in Science

watt-second

  1. A unit of energy equal to the work done by one watt acting for one second, equivalent to 1 joule.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.