What does density mean?

Definitions for density
ˈdɛn sɪ tiden·si·ty

Here are all the possible meanings and translations of the word density.

Princeton's WordNet

  1. density, densenessnoun

    the amount per unit size

  2. concentration, density, denseness, tightness, compactnessnoun

    the spatial property of being crowded together

Wiktionary

  1. densitynoun

    A measure of the amount of matter contained by a given volume.

  2. densitynoun

    The ratio of one quantity to that of another quantity.

    The number particles per unit volume of a specified volume can be considered to be the particle density for the specified volume.

  3. densitynoun

    The probability that an event will occur, as a function of some observed variable.

Samuel Johnson's Dictionary

  1. Densitynoun

    Closeness; compactness; close adhesion, or near approach of parts.

    Etymology: densitas, Latin.

    Whilst the densest of metals, gold, if foliated, is transparent, and all metals become transparent, if dissolved in menstruums or vitrified, the opacity of white metals ariseth not from their density alone. Isaac Newton, Opticks.

    The air within the vessels being of a less density, the outward air would press their sides together; and, being of a greater density, would expand them so as to endanger the life of the animal. John Arbuthnot, on Aliments.

Webster Dictionary

  1. Densitynoun

    the quality of being dense, close, or thick; compactness; -- opposed to rarity

  2. Densitynoun

    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

  3. Densitynoun

    depth of shade

  4. Etymology: [L. densitas; cf. F. densit.]

Freebase

  1. Density

    The mass density or density of a material is its mass per unit volume. The symbol most often used for density is ρ. Mathematically, density is defined as mass divided by volume: where ρ is the density, m is the mass, and V is the volume. In some cases, density is also defined as its weight per unit volume, although this quantity is more properly called specific weight. Different materials usually have different densities, and density may be relevant to buoyancy, purity and packaging. Osmium and iridium are the densest known elements at standard conditions for temperature and pressure but certain chemical compounds may be denser. Less dense fluids float on more dense fluids if they do not mix. This concept can be extended, with some care, to less dense solids floating on more dense fluids. If the average density of an object is less than water it will float in water and if it is more than water it will sink in water. Density is sometimes expressed by the dimensionless quantity "specific gravity" or "relative density", i.e. the ratio of the density of the material to that of a standard material, usually water. Thus a specific gravity less than one means that the substance floats in water.

Dictionary of Nautical Terms

  1. density

    The weight of a body in comparison with its bulk.

Military Dictionary and Gazetteer

  1. density

    The density or specific gravity of gunpowder is one of its most important properties. In the form of dust, the velocity of combustion increases rapidly with the density up to about 1.60, when it decreases. In grained powder the velocity of combustion decreases as the density increases. For English or American powder this velocity is about four-tenths of an inch per second. For French and most of the continental powders, which are less dense than the English, it is about forty-eight-hundredths of an inch. The excellent preservative qualities of English and American powders are largely due to their high densities,—the standard being about 1.75. A certain degree of density is absolutely essential to grain powder to prevent the inflamed gases from penetrating the pores of the powder and flashing off the whole mass to the destruction of the gun. In the manufacture of powder the density depends, first, upon the amount of trituration to which the ingredients are subjected in the incorporating mill; second, upon the pressure employed to form the cake; and, third, upon the degree of moisture it contains when subjected to these operations, particularly the last. The pressure-gauge is not a reliable measure of the density given to a powder, though a good indication of the hardness, with which density must not be confounded. Dry powder meal offers a great resistance to compression, but becomes very hard,—the work being consumed in consolidating the surface particles. To obtain uniform density a certain amount of moisture is necessary to assist the particles in their movement. As much as 6 per cent. of moisture is used in making prismatic powder.

Matched Categories

British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'density' in Nouns Frequency: #1929

Anagrams for density »

  1. destiny, Destiny

  2. Destiny

How to pronounce density?

How to say density in sign language?

Numerology

  1. Chaldean Numerology

    The numerical value of density in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of density in Pythagorean Numerology is: 6

Examples of density in a Sentence

  1. Bernard Vallat:

    When there is a disease in the Netherlands, which is the country in the world where the concentration of farms is the highest, be it for poultry or pigs, it hurts, The Netherlands are really vulnerable because of this density (of farms).

  2. Scott Applewhite:

    The Washburn fire is a relatively small, very slow moving surface fire, burning mainly at low intensity in mild to moderate fire weather, including in dense forests with no forest management history and an abundance of live and dead trees, this underscores what John Muir Project and hundreds of scientists have been saying for years: it’s not primarily about the density of live or dead trees, it’s about the weather and climate, and climate change.

  3. Simone Weil:

    There is something else which has the power to awaken us to the truth. It is the works of writers of genius. They give us, in the guise of fiction, something equivalent to the actual density of the real, that density which life offers us every day but which we are unable to grasp because we are amusing ourselves with lies.

  4. Adam Aja:

    It is uncertain what constrained our cemetery, forcing such an overuse of each square meter of soil, it was never clear whether the cemetery was circumscribed so that all burials were forced into a particular plot or whether the burials were clustered around some feature in the landscape. In either case, if this measured density was extrapolated across just the excavated areas, the number of burials would top 1200 persons.

  5. Derek Deng:

    It works fine in Tier 1, 2 cities because the density of sales is high, but when you go into lower-tier cities, you are facing a lot of difficulties.

Popularity rank by frequency of use

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Translations for density

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    a protective covering (as for a knife or sword)
    • A. sheath
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