Definition of buoyancy
1a : the tendency of a body to float or to rise when submerged in a fluid testing an object's buoyancyb chemistry : the power of a fluid to exert an upward force on a body placed in it the buoyancy of water; also : the upward force exerted
2 : the ability to recover quickly from depression or discouragement : resilience his buoyancy of spirit
3 : the property of maintaining a satisfactorily high level (as of prices or economic activity) betting that the economy will maintain its buoyancy
Examples of buoyancy in a Sentence
the natural buoyancy of cork
The swimmer is supported by the water's buoyancy.
We hope that the economy will maintain its buoyancy.
Recent Examples of buoyancy from the Web
Brin's airship supposedly uses a revolutionary design containing air sacs that can breathe, letting air in or out to control buoyancy.
But the new model provides for increasing buoyancy as the eruption continues—a very important factor, Head says, that ensures diamonds survive their trip through the crust to adorn ring fingers and necklines worldwide.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'buoyancy'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of buoyancy
First Known Use: 1713
BUOYANCY Defined for English Language Learners
Definition of buoyancy for English Language Learners
: the ability of an object to float in water or air
: the power of a liquid to make someone or something float
: the ability of someone or something to continue to be happy, strong, etc., through difficult times
BUOYANCY Defined for Kids
Definition of buoyancy for Students
1 : the power of rising and floating (as on water or in air) Cork has buoyancy in water.
2 : the power of a liquid to hold up a floating body Seawater has buoyancy.
Seen and Heard
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