buoyancy Meaning, Definition & Usage

  1. noun cheerfulness that bubbles to the surface
    perkiness.
  2. noun the property of something weightless and insubstantial
    airiness.
  3. noun the tendency to float in water or other liquid
  4. noun irrepressible liveliness and good spirit
    irrepressibility.
    • I admired his buoyancy and persistent good humor

WordNet

Buoy"an*cy noun
Wordforms
plural Buoyancies
Definitions
  1. The property of floating on the surface of a liquid, or in a fluid, as in the atmosphere; specific lightness, which is inversely as the weight compared with that of an equal volume of water.
  2. (Physics) The upward pressure exerted upon a floating body by a fluid, which is equal to the weight of the body; hence, also, the weight of a floating body, as measured by the volume of fluid displaced.
    Such are buoyancies or displacements of the different classes of her majesty's ships. Eng. Cyc.
  3. Cheerfulness; vivacity; liveliness; sprightliness; -- the opposite of heaviness; as, buoyancy of spirits.

Webster 1913