watt-second
(redirected from W-S)Also found in: Acronyms.
watt-sec·ond
(wŏt′sĕk′ənd)n. Abbr. WS or W-s
A unit of energy equal to the work done by one watt acting for one second, equivalent to 1 joule.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.