an inflatable vest used to control one’s buoyancy underwater or to rest at the surface, usually having a connecting hose for inflation or deflation by mouth and a CO 2 cartridge for rapid, emergency inflation.
See under Archimedes’ principle. the law that a body immersed in a fluid is buoyed up by a force (buoyant force) equal to the weight of the fluid displaced by the body. noun a law of physics stating that the apparent upward force (buoyancy) of a body immersed in a fluid is equal to the […]
tending to float in a fluid. capable of keeping a body afloat, as a liquid. not easily depressed; cheerful. cheering or invigorating. Contemporary Examples Those Kansas City Blues: A Family History Katie Baker October 23, 2014 Springsteen, Seeger, and the Joy of Political Music Howard Wolfson February 1, 2014 It’s the End of the World […]
tending to float in a fluid. capable of keeping a body afloat, as a liquid. not easily depressed; cheerful. cheering or invigorating. Contemporary Examples After Sandy Swept Away a Lifetime of Letters, 12,000 New Ones Arrive Michael Daly January 27, 2013 Historical Examples Traditions, Superstitions and Folk-lore Charles Hardwick Life Histories of North American Shore […]
Nautical. a distinctively shaped and marked float, sometimes carrying a signal or signals, anchored to mark a channel, anchorage, navigational hazard, etc., or to provide a mooring place away from the shore. a life buoy. to keep afloat or support by or as if by a life buoy; keep from sinking (often followed by up): […]