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Buoyancy
01
the property of something weightless and insubstantial
02
a feeling of hopefulness and confidence that makes one remain cheerful, especially in sad or unpleasant situations
03
the tendency of an object to float or rise in a fluid, like water or air, due to the upward force exerted by the fluid
Examples
Life jackets rely on buoyancy to keep people safe in water.
Hot air balloons use buoyancy to lift into the sky.
04
cheerfulness that bubbles to the surface
Lexical Tree
buoyancy
buoy
