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buoy'ancy com"pensator

Scuba Diving.
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 CO2 cartridge for rapid, emergency inflation. Also called BC, buoy'ancy control' device".

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.



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