2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Buoyancy \Buoy"an*cy\, n.; pl {Buoyancies}.
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.
From WordNet r 1.6 [wn]:
buoyancy
n 1: cheerfulness that bubbles to the surface [syn: {perkiness}]
2: the property of something weightless and insubstantial [syn:
{airiness}]
3: irrepressible liveliness and good spirit; "I admired his
bouyancy and persistent good humor" [syn: {irrepressibility},
{resilience}, {resiliency}]
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