buoy·​an·​cy ˈbȯi-ən(t)-sē How to pronounce buoyancy (audio)
: the tendency of a body to float or to rise when submerged in a fluid
testing an object's buoyancy
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
: the ability to recover quickly from depression or discouragement : resilience
his buoyancy of spirit
: 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 on the Web The buoyancy lifts the plastic vertically while the jig head sits on the bottom. Alex Robinson, Outdoor Life, 3 July 2024 Hybrid mattresses, on the other hand, are better for temperature regulation and offer more buoyancy for those who change positions. Ashley Zlatopolsky, Architectural Digest, 3 July 2024 Squids commonly leave clumps of their eggs on the seafloor, allowing their natural buoyancy to carry thousands of eggs into the water column, researchers said. Irene Wright, Sacramento Bee, 14 June 2024 But the vehicles, which use gas to create buoyancy, were quickly eclipsed by airplanes, which achieve flight through propulsion that generates airflow over the craft’s wings. Erik Ofgang, Smithsonian Magazine, 11 June 2024 See all Example Sentences for buoyancy 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'buoyancy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


see buoy entry 1

First Known Use

1713, in the meaning defined at sense 1a

Time Traveler
The first known use of buoyancy was in 1713

Dictionary Entries Near buoyancy

Cite this Entry

“Buoyancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buoyancy. Accessed 25 Jul. 2024.

Kids Definition


buoy·​an·​cy ˈbȯi-ən-sē How to pronounce buoyancy (audio)
: the tendency of a body to float or to rise when in a fluid
the buoyancy of a cork in water
: the power of a fluid to put an upward force on a body placed in it
the buoyancy of seawater
Last Updated: - Updated example sentences
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