Abbreviation for 'buoyancy control device,' essential diving equipment that allows scuba divers to adjust their buoyancy underwater.
Acronym formed from the initial letters of the four words in the full term. It became standard terminology in the scuba diving industry to quickly reference this safety-critical piece of equipment.
The BCD is one of the most important pieces of diving gear—without it, divers would sink or float uncontrollably, so this humble abbreviation represents life-or-death safety equipment!
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