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buoyancy

noun

buoy·​an·​cy ˈbȯi-ən(t)-sē How to pronounce buoyancy (audio)
ˈbü-yən(t)-
1
a
: 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

Example Sentences

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 Scientists had known for decades that many species of phytoplankton can move—some by changing their buoyancy by shedding fats or changing their dimensions and others by whipping their tail-like flagella. Katherine Harmon Courage, Scientific American, 1 Aug. 2022 Advancements in shape, fin design and foam type have improved their buoyancy and agility, making those soggy, slow boards a thing of the past. Los Angeles Times, 28 July 2022 The band, too, is impeccable: Their energy emanates from the stage, infecting the audience with their buoyancy and flair. Griffin Wiles, The Indianapolis Star, 25 June 2022 What would be a generic, thankless role in anyone else’s hands is given depth and dimension by Long, as well as a sense of buoyancy. Courtney Howard, Variety, 17 Aug. 2022 Elasmobranchs do not have swim bladders, which traditionally increase a fish's buoyancy. Olivia Munson, USA TODAY, 9 Aug. 2022 The team changed the robot’s body by using special foam that includes glass microspheres to increase buoyancy and combat the pressures of 1,000 meters – more than 100 times what humans experience at sea level. Ashley Strickland, CNN, 30 July 2022 The burly 10,000-denier Cordura vest gives your dog up to 7.9 pounds of potentially lifesaving buoyancy and provides an easy handle to grab when pulling him back into the raft. Joe Jackson, Outside Online, 20 Mar. 2015 Rescuers attached buoyancy devices to the hull to prevent the ship from sinking further. Stephen Sorace, Fox News, 4 Aug. 2022 See More

Word History

Etymology

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

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