Definition of density Density

/dɛˈnsʌti/ - [densutee] - den•si•ty

We found 13 definitions of density from 8 different sources.

What does density mean?

WordNet

Noun Plural: densities
density - the amount per unit size
		denseness
		compactness the consistency of a compact solid
		bits per inch, bpi a measure of how densely information is packed on a storage medium
		flux density, flux (physics) the number of changes in energy flow across a given surface per unit area
		absorbance, optical density, photographic density, transmission density (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation
		low density, rarity, tenuity a rarified quality; "the tenuity of the upper atmosphere"
density - the spatial property of being crowded together
		concentration, denseness, tightness, compactness
		spatial arrangement, spacing the property possessed by an array of things that have space between them

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Wiktionary

density (Noun)
A measure of the amount of matter contained by a given volume.
density (Noun)
The ratio of one quantity to that of another quantity.
density (Noun)
The probability that an event will occur, as a function of some observed variable.

Webster DictionaryWebster's Unabridged Dictionary 📘

density (n.)
The quality of being dense, close, or thick; compactness; -- opposed to rarity.
density (n.)
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.
density (n.)
Depth of shade.

OmegaWiki DictionaryOmegaWiki Dictionary Ω

density
The mass of a substance per unit volume.

Sailor's Word-BookThe Sailor's Word-Book ⛵

density
The weight of a body in comparison with its bulk.

Military DictionaryMilitary Dictionary and Gazetteer 💥

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.

Wikipedia

Density is a measurement that compares the amount of matter an object has to its volume. An object with a lot of matter in a certain amount of volume has high density. An object with a little matter in the same amount of volume has a low density.

Fresh water is the only liquid with a density of 1.

The most common SI units for density are g/cm3 and kg/m3.