What is the definition of density, and what are three different units for density?
http://www.just-define.com/density-defin… Definition of density density n 1: the amount per unit size [syn: denseness] 2: the spatial property of being crowded together [syn: concentration, denseness, compactness] [ant: distribution] As defined in: WordNet (r) 2.0 ————————————–… 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
