buoy·​an·​cy | \ ˈbȯi-ən(t)-sē How to pronounce buoyancy (audio) , ˈbü-yən(t)- \

Definition of buoyancy

1a : the tendency of a body to float or to rise when submerged in a fluid testing an object's buoyancy
b 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.
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Recent Examples on the Web Since then, the feelings of progress, buoyancy, and even semi-normalcy from the late spring and early summer have dissipated, jarringly. Joe Pinsker, The Atlantic, 6 Aug. 2021 Moving through the drag, buoyancy and viscosity of water usually requires more energy than moving on land. New York Times, 26 July 2021 Such buoyancy, of course, is widespread in the spring. Matt Kawahara, San Francisco Chronicle, 23 Sep. 2021 At his sharpest, his rapping was its own form of goofball poetry—a marvel of buoyancy, spontaneity, and ad-hoc wit. Sheldon Pearce, The New Yorker, 7 Sep. 2021 Although private consumption has somewhat slowed due to the coronavirus resurgence, exports have sustained their buoyancy and facilities investment has shown a robust trend. Julia Horowitz, CNN, 26 Aug. 2021 Pareja credits the team’s current success to adaptability and buoyancy in a team full of second-string players hungry to step up. Julia Poe, orlandosentinel.com, 22 July 2021 One possibility, the researchers say, is an air bubble clinging to the belly-up beetle, which could be providing upward buoyancy keeping the beetle aloft. New York Times, 26 July 2021 The Mayor traces his newfound buoyancy to the end of lockdown. Hunter Walker, The New Yorker, 19 July 2021

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.

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First Known Use of buoyancy

1713, in the meaning defined at sense 1a

History and Etymology for buoyancy

see buoy entry 1

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Time Traveler for buoyancy

Time Traveler

The first known use of buoyancy was in 1713

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Dictionary Entries Near buoyancy



buoyancy tank

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Statistics for buoyancy

Last Updated

19 Oct 2021

Cite this Entry

“Buoyancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buoyancy. Accessed 27 Nov. 2021.

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More Definitions for buoyancy



English Language Learners Definition of buoyancy

: 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


buoy·​an·​cy | \ ˈbȯi-ən-sē How to pronounce buoyancy (audio) , ˈbü-yən- \

Kids Definition of buoyancy

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.


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