density
Americannoun
plural
densities-
the state or quality of being dense; compactness; closely set or crowded condition.
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stupidity; slow-wittedness; obtuseness.
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the number of inhabitants, dwellings, or the like, per unit area.
The commissioner noted that the population density of certain city blocks had fallen dramatically.
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Physics. mass per unit volume.
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Electricity.
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the quantity of electricity per unit of volume at a point in space, or the quantity per unit of area at a point on a surface.
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the degree of opacity of a substance, medium, etc., that transmits light.
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Photography. the relative degree of opacity of an area of a negative or transparency, often expressed logarithmically.
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Computers. a measure of the compactness of data saved on a storage medium, as disk or tape, or displayed on an electronic screen.
noun
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the degree to which something is filled, crowded, or occupied
high density of building in towns
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obtuseness; stupidity
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ρ. a measure of the compactness of a substance, expressed as its mass per unit volume. It is measured in kilograms per cubic metre or pounds per cubic foot See also relative density
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a measure of a physical quantity per unit of length, area, or volume See charge density current density
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physics photog See transmission density reflection density
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A measure of the quantity of some physical property (usually mass) per unit length, area, or volume (usually volume).
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◆ Mass density is a measure of the mass of a substance per unit volume. Most substances (especially gases such as air) increase in density as their pressure is increases or as their temperature decreases.
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◆ Energy density is a measure of the amount of energy (often in the form of electromagnetic radiation) per unit volume in a region of space or some material.
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See also Boyle's law
Other Word Forms
- nondensity noun
- superdensity noun
Etymology
Origin of density
First recorded in 1595–1605; from Latin dēnsitās, equivalent to dēns(us) dense + -itās -ity
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Bone density—or a lack thereof—is the new big thing in perimenopausal and menopausal wellness.
Coco chooses neighborhoods to deploy its bots based on density, prioritizing areas with restaurants clustered together and short delivery distances as well as places where parking is difficult.
From Los Angeles Times
My sister reminded me that I have small wrists, and since I’m generally a lazy bum who doesn’t exercise much, I should be thinking more about bone density.
The clue to finding meaning is in the density of the symbols.
From BBC
Energy expenditure decreases, and losses in muscle mass, bone density, and appetite are common.
From Science Daily
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
