Hypertext Webster Gateway: "density"

From Webster's Revised Unabridged Dictionary (1913) (web1913)

Density \Den"si*ty\, n. [L. densitas; cf. F. densit['e].]
1. The quality of being dense, close, or thick; compactness;
-- opposed to rarity.

2. (Physics) 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.

Note: For gases the standard substance is hydrogen, at a
temperature of 0[deg] Centigrade and a pressure of 760
millimeters. For liquids and solids the standard is
water at a temperature of 4[deg] Centigrade. The
density of solids and liquids is usually called
specific gravity, and the same is true of gases when
referred to air as a standard.

3. (Photog.) Depth of shade. --Abney.

From WordNet (r) 1.7 (wn)

density
n 1: the amount per unit size [syn: {denseness}]
2: the spatial property of being crowded together [syn: {concentration},
{denseness}, {compactness}] [ant: {distribution}]


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