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/dˈɛnsəti/ /dˈɛnsɪti/ Listen

noun

Density n.

The quality of being dense, close, or thick; compactness; opposed to rarity.

(Physics) 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. Note: For gases the standard substance is hydrogen, at a temperature of 0° Centigrade and a pressure of 760 millimeters. For liquids and solids the standard is water at a temperature of 4° Centigrade. The density of solids and liquids is usually called specific gravity, and the same is true of gases when referred to air as a standard.

(Photog.) Depth of shade.

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Etymology of 'Density'

Collaborative International Dictionary of English 0.48

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"Density" Quotes from Famous Books

... same as that of increasing the thickness in the same ratio. In a similar way the absorption of light in the coloured gas chlorine is found to be unaltered if the thickness is reduced by compression, because the density is increased in the same ratio that the thickness is reduced. This is not strictly the case, however, for such gases and vapours as exhibit well-defined bands of absorption in the spectrum, as these bands are altered in character ...

— Project Gutenberg Encyclopedia

... spiritually nervous, in Westminster Abbey or Notre Dame. The vast enclosed clearness has much to do with the idea. There are no shadows to speak of, no marked effects of shade; only effects of light innumerably—points at which this element seems to mass itself in airy density and scatter itself in enchanting gradations and cadences. It performs the office of gloom or of mystery in Gothic churches; hangs like a rolling mist along the gilded vault of the nave, melts into bright interfusion the mosaic scintillations ...

— Italian Hours • Henry James

... fat slumber upon its corn sacks and die snoring: or, alternatively, lacking these valorous alarms and excursions it might become self-satisfied and formularized, and be crushed to death by the mere dull density of virtue. Next to good the most valuable factor in life is evil. By the interaction of these all things are possible, and, therefore (or for any other reason that pleases you) let us wave a friendly hand in ...

— Mary, Mary • James Stephens

... the levee, disappearing in the darkness. Grandemont followed as well as he could, calling to him, but in vain. For longer than an hour he pursued the search. Descending the side of the levee, he penetrated the rank density of weeds and willows that undergrew the trees until the river's edge, shouting Victor's name. There was never an answer, though once he thought he heard a bubbling scream from the dun waters sliding past. Then the storm broke, and he returned to ...

— Roads of Destiny • O. Henry

... seizure never, however, occurs while the subject is in the caisson, or in other words, while he remains under pressure. Moreover, when the transition from the condensed atmosphere to that of ordinary density is gradually accomplished, which may be done by letting the air escape from the lock very slowly, the caisson disease is rarely if ever set up. It is the systematic disregard of this principle by those who work in compressed air that is responsible, or largely responsible, ...

— Scientific American Supplement No. 822 - Volume XXXII, Number 822. Issue Date October 3, 1891 • Various

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