Buoyancy meaning

boi'ən-sē, bo͝o'yən-
The power to keep something afloat; upward pressure on a floating object.
noun
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Lightness of spirit; cheerfulness.
noun
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The upward force that a fluid exerts on an object that is less dense than itself. Buoyancy allows a boat to float on water and provides lift for balloons.
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The ability of an object to stay afloat in a fluid.
noun
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Lightness or resilience of spirit; cheerfulness.
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The ability or tendency to float or rise in liquid or air.
noun
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The definition of buoyancy refers to whether something can float in water or air, or the power of water or other liquids to keep water afloat, or an optimistic disposition.

An example of buoyancy is when a boat floats in water.

An example of buoyancy is when salt water has the ability to help things float.

An example of buoyancy is a cheerful person who is grateful for her job and who is generally happy and optimistic.

adjective
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Ability to recover quickly from setbacks; resilience.
noun
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The tendency or capacity to remain afloat in a liquid or rise in air or gas.
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The upward force that a fluid exerts on an object less dense than itself.
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(physics) The upward force on a body immersed or partly immersed in a fluid.
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(by extension) Resilience or cheerfulness.
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Origin of buoyancy

From buoyant +‎ -cy.