Online Google Dictionary

buoyancy 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈboi-ənsē/,/ˈbo͞oyənsē/,
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The ability or tendency to float in water or air or some other fluid,
  1. The ability or tendency to float in water or air or some other fluid

  2. The power of a liquid to keep something afloat

  3. An optimistic and cheerful disposition
    • - the happiness and buoyancy of his nature
  4. A high level of activity in an economy or stock market
    • - there is renewed buoyancy in the demand for steel
  1. cheerfulness that bubbles to the surface
  2. airiness: the property of something weightless and insubstantial
  3. the tendency to float in water or other liquid
  4. irrepressibility: irrepressible liveliness and good spirit; "I admired his buoyancy and persistent good humor"
  5. (buoyant) tending to float on a liquid or rise in air or gas; "buoyant balloons"; "buoyant balsawood boats"; "a floaty scarf"
  6. (buoyant) characterized by liveliness and lightheartedness; "buoyant spirits"; "his quick wit and chirpy humor"; "looking bright and well and chirpy"; "a perky little widow in her 70s"
  7. In physics, buoyancy is an upward acting force, caused by fluid pressure, that opposes an object's weight. If the object is either less dense than the liquid or is shaped appropriately (as in a boat), the force can keep the object afloat. ...
  8. the upward force on a body immersed or partly immersed in a fluid; The ability of an object to stay afloat in a fluid; resilience or cheerfulness
  9. (buoyant) having buoyancy; able to float; lighthearted and lively
  10. (Buoyant) A market in which prices have a tendency to rise easily with a considerable show of strength.
  11. (Buoyant) Floats easily, and is less dense than water.
  12. (Buoyant) capable of keeping a body afloat
  13. (buoyant) (adjective) -- able to float easily ch. 5
  14. (buoyant) cheering or invigorating; lighthearted
  15. The upward force exerted on an object in liquid, whether the object sinks or floats. Objects that float are positively buoyant, those that sink are negatively buoyant and those that stay where placed are neutrally buoyant.
  16. The capacity to remain afloat
  17. The ability or tendency to float or rise in a liquid.
  18. The tendency of a body to float or rise when submerged in a fluid.
  19. Buoyancy is the upward force resulting from a lighter material contacting a heavier material, such as wood floating in water.
  20. The lifting force acting in a fluid on bodies and regions less dense than their surroundings. The buoyancy of hot air--the force that also lifts hot-air balloons--is the main cause of weather-related flows in the Earth's atmosphere. Also see convection.
  21. the ability to float due to an object displacing a fluid medium greater than its own weight. Buoyancy can be controlled by the use of ballast. ...
  22. the abililty of water to support weight and the degree to which it can support weight.
  23. The ability for an object to be lifted up, or to float, because of the greater density of the liquid it is in
  24. a very characteristic force that acts upon all submerged bodiesv
  25. The quality of floating or being supported or borne up by a fluid. A vessel is buoyant in proportion as she is bulk for bulk lighter than the fluid she is supported in