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Illumination, or degree of illumination; as, the lightness of a room. Chaucer.

The quality or state of being slight; slenderness; feebleness; superficiality; also, formerly, negligence; indifference; disregard.

Lightness of spirits; gayety; levity; as, the airiness of young persons.

, but with a bluish tinge, and is remarkable for its resistance to oxidation, and for its lightness, pertaining a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al. Aluminium bronze or gold, a pale gold- colored alloy of aluminium and copper, used for journal bearings, etc.

rty 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.

l team. A trainband captain eke was he. Cowper. The Rhodian captain, relying on . . . the lightness of his vessel, passed, in open day, through all the guards. Arbuthnot.

The state or quality of being flighty. The flightness of her temper. Hawthorne.

Unsteadiness; levity; lightness. [Obs.] Bp. Hopkins.

A flying with lightness and celerity; a fluttering.

y; mutability; fickleness; variableness. For unto knight there was no greater shame, Than lightness and inconstancie in love. Spenser.

Lightness; nimbleness [Archaic] Shak.

Lightness; buoyancy; act of making light. Paley.

The quality of weighing less than something else of equal bulk; relative lightness, especially as shown by rising through, or floating upon, a contiguous substance; buoyancy; -- opposed to gravity. He gave the form of levity to that which ascended; to that which descended, the form of gravity. Sir. W. Raleigh. This bub…

The quality of being nimble; lightness and quickness in motion; agility; swiftness.