Definition of density in English:



  • 1The degree of compactness of a substance.

    ‘a reduction in bone density’
    • ‘The sheer volume, as well as the astonishing density of thought and image, of his wonderful notebooks testify to the amplitude of his intellectual interests.’
    • ‘Because it is a weight bearing activity, skating can build bone density to a certain degree.’
    • ‘Syncopation in varying degrees of rhythmic density plays an important role in ‘Kohntarkosz.’’
    • ‘Encouraging the consumption of this single food, milk, may have lasting implications for nutrient density, bone health and body weight.’
    • ‘It also found a connection between the amount smoked, and the size and density of areas in the brain which are linked to higher nicotine dependence and increased impulsivity.’
    solidity, solidness, denseness, thickness, substance, bulk, weight, mass
    compactness, tightness, hardness
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    1. 1.1Computing A measure of the amount of information on a storage medium (tape or disk). For magnetic tape it is the amount of information recorded per unit length of tape (bits per inch or millimeter); for a disk, a fixed number of bits per sector, sectors per track, and tracks per disk.
      ‘chip density doubles every eighteen months’
      [as modifier, in combination] ‘a low-density 5.25-inch floppy disk’
      ‘a drive capable of handling high-density 1.44 megabyte disks’
      • ‘The change to a higher capacity is interesting not only in terms of storage density, but also heat dissipation.’
      • ‘In today's cramped data centers, real estate is at a premium, and maximum storage density is a necessity.’
      • ‘One way to increase storage capacity is to increase the areal density of the medium.’
      • ‘With its incredibly high storage density, the DVD might just be the solution to two vexing problems.’
      • ‘While in its early stages, the technology shows potential for high speed, high density storage of data, while retaining data even when power is turned off.’
    2. 1.2Physics Degree of consistency measured by the quantity of mass per unit volume.
      • ‘We are further informed that scientific theories fail at a singularity, which is an event involving infinite mass, density, pressure and temperature.’
      • ‘The formula is easily derived by making assumptions about the mass density of the earth.’
      • ‘That is based on its average density, calculated by dividing total mass by volume.’
      • ‘Refraction is the bending of light rays as they pass from one transparent medium to another medium of a different density; it is measured in diopters.’
      • ‘The strength of the absorption reveals the temperature, density, and mass of a gas cloud.’
    3. 1.3The opacity of a photographic image.
      • ‘More exposure produces increasingly less density in the final negative.’
      • ‘The image will lighten considerably during clearing, but don't worry because all the lost density will return during toning and fixing.’
      • ‘While the imagery was similar, the format and the images' density were not.’
      • ‘Hot and cool colors come together explosively within individual dishes, offering various effects of density and opacity.’
      • ‘Phone based cameras don't yet have sufficient image density to compete with true digital cameras, but they will in a few short years.’
    4. 1.4The quantity of people or things in a given area or space.
      ‘areas of low population density’
      [count noun] ‘a density of 10,000 per square mile’
      • ‘The Government should develop a specific number of roads every year according to the traffic density of the area concerned.’
      • ‘Moore's Law states that the transistor density of a silicon chip will double every two years, allowing a corresponding increase in processor speed.’
      • ‘His large-scale color photographs illustrate the unbelievable density of Hong Kong's residential high-rises.’
      • ‘The low population density in rural areas makes the provision of specialized mental health services in those areas impractical.’
      • ‘It is not known why the understory of the Hermit forest had such uncharacteristically low total stem density and total basal area.’


Early 17th century: from French densité or Latin densitas, from densus dense.