buoyancy
noun · Level 2 SAT
1Power or tendency to float on or in a liquid or gas
The buoyancy of the life vest kept the exhausted swimmer afloat until rescuers could reach her.
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noun · Level 2 SAT
1Power or tendency to float on or in a liquid or gas
The buoyancy of the life vest kept the exhausted swimmer afloat until rescuers could reach her.