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.
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.
Cheerfulness; vivacity; liveliness; sprightliness; - the opposite of heaviness; as, buoyancy of spirits.
The quality of being dense, close, or thick; compactness; - opposed to rarity.
The ratio of mass, or quantity of matter, to bulk or volume, esp. as compared with the mass and volume of a portion of some substance used as a standard.
Depth of shade.