SWS

abbreviation for

, Physiology.

1. slow-wave sleep ( def ).

Word History and Origins

Origin of SWS¹

First recorded in 1965–70

Example Sentences

Its ground forces are armed with several different types of U.S. grenade launchers, Browning machine-guns, AR-15 assault rifles, and SR-25 and M24 SWS sniper rifles, all made in the U.S., as is the ammunition for them.

From Salon

“The thing is, this is Mother Nature,” said Tim Keating, founder of SWS Mountain Guides, a company that provides skiing guides and certified avalanche training.

From Los Angeles Times

Rapid snowfall: There’s no scientific formula, but Caleb Burns, co-owner of SWS Mountain Guides, suggests that any significant snowfall in a short amount of time can be a red flag.

From Los Angeles Times

There is a significant difference, though, between the two: those penguins only spent 14% of their time while drowsy, and spent another 37.5% of their time in their own version of SWS.

From Salon

Yet those birds' spurts of SWS on average lasted more than ten times as long at 42 seconds.

From Salon