watt-second(redirected from W-S)
Also found in: Acronyms.
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.