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density

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den⋅si⋅ty

  [den-si-tee]
–noun, plural -ties.
1. the state or quality of being dense; compactness; closely set or crowded condition.
2. stupidity; slow-wittedness; obtuseness.
3. 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.
4. Physics. mass per unit volume.
5. Electricity.
a. 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.
b. current density.
6. the degree of opacity of a substance, medium, etc., that transmits light.
7. Photography. the relative degree of opacity of an area of a negative or transparency, often expressed logarithmically.
8. Computers. a measure of the compactness of data stored on an external storage medium, as disk or tape, or displayed on a CRT or other screen.
Use density in a Sentence
Origin:
1595–1605; < L dēnsitās, equiv. to dēns(us) dense + -itās -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
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den·si·ty   (děn'sĭ-tē)   
n.   pl. den·si·ties

  1. The quality or condition of being dense.

    1. The quantity of something per unit measure, especially per unit length, area, or volume.

    2. The mass per unit volume of a substance under specified conditions of pressure and temperature.

  3. Computer Science The number of units of useful information contained within a linear dimension.

  4. The number of individuals, such as inhabitants or housing units, per unit of area.

  5. The degree of optical opacity of a medium or material, as of a photographic negative.

  6. Thickness of consistency; impenetrability.

  7. Complexity of structure or content.

  8. Stupidity; dullness.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

density

The relative heaviness of objects, measured in units of mass or weight per units of volume. (See specific gravity.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: den·si·ty
Pronunciation: 'den(t)-s&t-E, -stE
Function: noun
Inflected Form: plural -ties
1 : thequantity per unit volume, unit area, or unit length: as a : the mass of a substance per unit volume b : the distribution of a quantity (as mass, electricity, orenergy) per unit usually of space c : the average number of individuals or units per space unit density of 500 persons per square mile>
2 a : the degree of opacity of a translucent medium b : ABSORBANCE
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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density den·si·ty (děn'sĭ-tē)
n.

  1. The mass per unit volume of a substance at a specified pressure and temperature.

  2. The quantity of something per unit measure, especially per unit length, area, or volume.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
density   (děn'sĭ-tē)  Pronunciation Key 
A measure of the quantity of some physical property (usually mass) per unit length, area, or volume (usually volume). ◇ 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. ◇ 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. See also Boyle's law.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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