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.
Recent Examples on the Web But this moment of inexplicable buoyancy, this profound bit of surrealism, encapsulates how Anatomy of a Scandal will repeatedly undermine its own point throughout the rest of the series. ELLE, 19 Apr. 2022 Crewmen continue to pump water out of the ship to maintain its buoyancy and integrity. Fox News, 16 Apr. 2022 Theraquatics Aqua Jogging Belt ($14) Throw on a buoyancy belt like the Theraquatics Aqua Jogging Belt and join those octogenarians in the pool for some water aerobics. Joe Jackson, Outside Online, 13 Nov. 2014 Ballast tanks are used to control the buoyancy of a vessel. Andy Rose, CNN, 19 Mar. 2022 Ashley Laracey, in a debut, showed glimpses of real command, offering a sprite-like buoyancy in her balances and arabesques. New York Times, 28 Jan. 2022 Higher borrowing costs could slow down economic growth and lower stock prices, taking some of the buoyancy out of the recovery. New York Times, 28 Jan. 2022 But with so much that's new in the organization, from general manager Chris Albright, to Noonan and his staff, to the few new players and the promise of more to come, there is a kind of buoyancy about the season ahead. Pat Brennan, The Enquirer, 21 Jan. 2022 Formative, and transformative, their kinship endured, though in physical absentia, even after their splendid summer days of boyhood buoyancy in the Cinque Terre region ended. Carlos Aguilar, Los Angeles Times, 1 Dec. 2021 See More

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.

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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Last Updated

4 May 2022

Cite this Entry

“Buoyancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buoyancy. Accessed 21 May. 2022.

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More Definitions for buoyancy


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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