English edit

Etymology edit

buoyant +‎ -cy or buoy +‎ -ancy.

 
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Pronunciation edit

  • (UK, US) IPA(key): /ˈbɔɪ.ən.si/
  • (file)

Noun edit

buoyancy (countable and uncountable, plural buoyancies)

  1. (physics) The upward force on a body immersed or partly immersed in a fluid.
  2. The ability of an object to stay afloat in a fluid.
  3. (by extension) Resilience or cheerfulness.
    • 1834, L[etitia] E[lizabeth] L[andon], chapter XI, in Francesca Carrara. [], volume III, London: Richard Bentley, [], (successor to Henry Colburn), →OCLC, page 82:
      With how much lighter a step, with how much brighter an eye, did Francesca wander through the forest, even in the last desolation of autumn, than she did in all the bloom and buoyancy of spring!

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