buoyancy
Pronunciation
Noun
B1 Intermediate
Quick answer
The ability of an object to float in a liquid or rise in a gas.
Usage notes
An object floats when its buoyancy is greater than its weight, and sinks when it is less.
Test yourself
Which word fits the gap? "The life jacket's _____ kept her afloat until help arrived."
Answer: buoyancy
In your own words, what does "buoyancy" mean?
The ability of an object to float in a liquid or rise in a gas.
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