C1noun2K

Density

UK /["/ˈdensəti/"]/US /["/ˈdensəti/"]/

Definition

the quality of being dense; the degree to which something is dense

In simple words: How heavy something is for its size.

Examples

  • The population density in this city is very high.
  • low-density forest
  • an average density of 2.4 people per hectare
  • the density of a gas
  • similar stars of the same mass and density
  • Vitamin D deficiency causes a loss of bone density.

Usage notes

Used in science and everyday conversation; suitable for discussing materials or substances. Avoid using in informal contexts unless talking about a substance in a casual way.

Grammar pattern

standalone concept

Memory hint

Think of 'dense' as 'heavily packed' to remember density.

Collocations

  • high
  • low
  • average
  • calculate
  • determine
  • estimate
  • change
  • vary
  • increase
  • high
  • low
  • average
  • calculate
  • determine
  • estimate
  • change
  • vary
  • increase

Synonyms

  • heaviness
  • concentration
  • compactness

Antonyms

  • lightness
  • thinness

Common mistakes

  • Confused with 'mass' - density relates mass to volume.
  • Omitting units when discussing density (e.g., grams per cubic centimeter).