| 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.
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| 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. |
The relative heaviness of objects, measured in units of mass or weight per units of volume. (See specific gravity.)
density den·si·ty (děn'sĭ-tē)
n.
The mass per unit volume of a substance at a specified pressure and temperature.
The quantity of something per unit measure, especially per unit length, area, or volume.