Definition of buoyancy in English:

buoyancy

noun

  • 1The ability or tendency to float in water or air or some other fluid.

    • ‘The array tube is filled with mineral oil to create neutral buoyancy, allowing the array to float behind the underwater towing vehicle.’
    • ‘This procedure confers on the armadillo enough additional buoyancy to enable it to float.’
    • ‘Gas vesicles are gas-filled intracellular structures that provide buoyancy in many unicellular aquatic organisms.’
    • ‘They are barely in control of themselves, taking turns to float up before dumping all buoyancy and crashing back into the wreck in a cloud of silt and debris.’
    • ‘The boats took on more water than they had buoyancy.’
    • ‘Cold water is denser than hot water, he explains, so it provides more buoyancy.’
    • ‘Weight reduction is not as important in swimming because the body mass is subject to buoyancy by being immersed in water.’
    • ‘Walking underwater with a teacher's help, then floating to the surface on the ‘water elevator’ also builds trust and understanding of buoyancy in a fun way.’
    • ‘Other colonial hydrozoans, such as the chondrophorines and siphonophorans, are pelagic; many of these have developed internal gas-filled floats as an aid to buoyancy.’
    • ‘My lungs then re-expand, my wetsuit buoyancy returns and I float to the surface.’
    • ‘A less safe alternative would be for the supervisor to have a rapidly inflatable life jacket that would allow a rescue from under the water but would then provide adequate buoyancy to return the rescuer and the swimmer to the surface.’
    • ‘If lifting the ball up stops the water from running, try to bend the float arm down to get the right buoyancy.’
    • ‘During vertical movements, animals can take advantage of gravity or positive buoyancy to permit unpowered downward or upward locomotion for a longer period.’
    • ‘The Arena suit, in all honesty, has a great blend of buoyancy and feel for the water due to the specialist material.’
    • ‘Typically, Clione swim nearly continuously to maintain a stable position in the water column and avoid sinking due to negative buoyancy.’
    • ‘First, water provides sharks with substantial buoyancy, whereas air does not confer the same benefit to aircraft.’
    • ‘Defying all laws of buoyancy, he continued walking into the water until the surface was a good five feet above him.’
    • ‘On the other hand, these wider vesicles float more readily due to their greater buoyancy.’
    • ‘My buoyancy is such that at 15m I could float to the surface without effort.’
    • ‘Built into each wheel unit was a flotation tank with sufficient buoyancy to float the unit.’
    ability to float, tendency to float, lightness
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    1. 1.1The power of a liquid to keep something afloat.
      • ‘The buoyancy of the water protects your joints.’
      • ‘Their bones are unusually thick, possibly an adaptation to make the animal heavier counteracting the buoyancy of the water.’
      • ‘Water activities are very popular during pregnancy as the water offers buoyancy and allows exercise to be performed in warmer climates without raising the mother's core temperature too much.’
      • ‘Just letting the natural buoyancy of the water keep me afloat.’
      • ‘Even if you don't like to swim, walking in the shallow end can provide aerobic benefits, and the buoyancy of the water will take the stress off your joints.’
      • ‘Water's buoyancy makes a swimmer feel weightless and reduces stress on joints in the spine, hips and knees.’
      • ‘Using the natural buoyancy of the water, the experimental dance is both effortless and enormously fluid.’
      • ‘Logic tells you that you cannot fall and that the buoyancy of the water will support you, but what you feel is the opposite.’
      • ‘Raziel, on the other hand, begins the game in the spectral realm, a plane where lost souls gather, objects can't be moved and water has no buoyancy.’
      • ‘And because of its buoyancy, water is also used in rehabilitation programs.’
  • 2An optimistic and cheerful disposition.

    ‘the happiness and buoyancy of his nature’
    • ‘Thus is Philip Gura caught in neutral buoyancy between belief and hope.’
    • ‘It lets down the charm of their formidable buoyancy and their obvious talent for sonic collage; they're at their most interesting when revelling in bombastic beats and unexpected sounds.’
    • ‘But I certainly think it took through until the 1970s possibly to regain some of that buoyancy, and some of that optimism.’
    • ‘Bridget rides them with defiant optimism, but both her bad breaks and her endearing buoyancy in dealing with them venture outside the real.’
    • ‘Her music reflects youthful buoyancy and her rich repertoire keeps the audience spellbound.’
    • ‘This summer WXPN named Calico an Album of the Week, and its cheery buoyancy has earned it airplay nationwide.’
    • ‘This did not dispel Calderwood's good humour and buoyancy in a season far from finished as he embraced Levein on the touchline before kick-off.’
    • ‘Discussions became political after next to no time (and all the other Kiwis were National or centre-right) so there was a bit of hope and buoyancy that National and Dr Brash will win this year.’
    • ‘Agile and on his toes most of the time Dr Syiem hardly looks like a person who has had a tryst with Cancer and for the time being it seems he has beaten it with his optimism resilience and buoyancy.’
    • ‘Indeed, Hem's songs - no matter how bleak - project a hope and buoyancy that would grate were it not for their deftness and skill.’
    • ‘At his Balzacian best, he radiated warmth, buoyancy, optimism and hope; but in his more Dostoyevskian mode, he was consumed by doubt, loneliness, envy and disappointment.’
    • ‘Where a month ago there was optimism and buoyancy, there is hopelessness.’
    • ‘If enthusiasm can mask a multitude of sins then Williamson will be hoping this kid's mental buoyancy will rub off on the few senior players he will still have at his disposal next term once the giant summer clearout sale is completed.’
    cheerfulness, cheeriness, happiness, light-heartedness, carefreeness, brightness, gladness, merriment, joy, bounce, effervescence, blitheness, sunniness, breeziness, jollity, joviality, animation, liveliness, life, sprightliness, jauntiness, ebullience, high spirits, vivacity, vitality, verve, sparkle, zest
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  • 3A high level of activity in an economy or stock market.

    ‘there is renewed buoyancy in the demand for steel’
    • ‘There is another factor behind the stock's buoyancy: a potential buyout.’
    • ‘The debate over whether kitsch constitutes a genuine art form becomes moot if the artifact in question reaches a certain critical mass of sheer buoyancy.’
    • ‘First, the market's recent buoyancy is stirring investor greed.’
    • ‘The Royal Institution of Chartered Surveyors said house price inflation was running at close to two-and-a-half times the long-term average, reflecting continuing buoyancy in the market.’
    • ‘After a long time, the revived projects are exceeding the value of projects shelved, showing overall buoyancy in the economy and investment.’
    • ‘This reflected improved economic buoyancy, particularly in property and retail and higher spending across a range of areas from financial to general classified advertising.’
    • ‘At any rate, the experience of the boom-bust cycles was that rapid money-supply growth was accompanied by buoyancy in both asset prices and spending.’
    • ‘Yet the relative buoyancy of the UK economy suggests that Scotland will be insulated from these wider chills.’
    • ‘The effect of this revision has been to transform Scotland's regular flirtation with recession into a steady relationship with economic buoyancy.’
    • ‘This year experts are looking to renewed buoyancy in the US economy, while the European economies look pretty sluggish.’
    • ‘The revenues for the future are showing a greater degree of buoyancy and I think we now have to focus on health, education and social welfare.’
    • ‘It is the rural sector that has given us growth and buoyancy over the last couple of years.’
    • ‘The health of a country's economy should not be judged by the buoyancy of its stock market or its currency's strength.’
    • ‘None of them reported that they had relaxed their credit criteria in the face of the buoyancy in the Irish economy.’
    • ‘There has been a massive temporary boost to our competitiveness from a low dollar, which is the main reason for our current economic buoyancy.’
    • ‘Mr Harrison said the order book reflected the continuing buoyancy of the region's economy.’
    • ‘The country in general has witnessed dramatic price rises in recent years, attributed to inflation, economic buoyancy, and now the euro changeover.’
    • ‘Our British headquarters is amazed at the buoyancy of the Irish market.’
    • ‘Much of the Korean economy's buoyancy can be traced to the effects of banking reforms since Korea's 1997 financial crisis.’
    • ‘However, a surprising resilience and unexpected buoyancy has emerged during the past year.’
    vigour, strength, high level of activity, burgeoning, resilience, growth, development, progress, improvement, expansion, mushrooming, snowballing, ballooning
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Pronunciation:

buoyancy

/ˈboiənsē//ˈbo͞oyənsē/