Definition of density noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈdensəti//
    ; NAmE NAmE//ˈdensəti//
    (pl. densities)
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  1. 1[uncountable] the quality of being dense; the degree to which something is dense population density low density forest
  2. 2 [countable, uncountable] (physics) the thickness of a solid, liquid or gas measured by its mass per unit of volume the density of a gas
  3. 3 [uncountable] (computing) the amount of space available on a disk for recording data
  4. Word Originearly 17th cent.: from French densité or Latin densitas, from densus ‘dense’.Extra examples The population density in this city is very high. an average density of 2.4 people per hectare Vitamin D deficiency causes a loss of bone density. similar stars of the same mass and density
See the Oxford Advanced American Dictionary entry: density