1. plural of density; the degree of compactness of a substance or the quantity of something per unit measure

Examples

• The densities of different metals vary significantly.
• Population densities in urban areas are much higher than in rural regions.
• Scientists measured the densities of various liquids in the experiment.
• The chart shows bone densities for different age groups.
• Oil and water have different densities, which is why oil floats.
• Traffic densities increase during rush hour.
• The densities of gases change with temperature and pressure.