noun
density
DEN-suh-tee/ˈdensəti/
The amount concentrated within a given space.
The crowded tray has a greater density of beads than the sparsely filled tray.

Etymology
The pieces name the quality of being thick or closely compacted. Measuring how much occupies a given space makes that quality quantitative, especially in the physical sense of mass per unit volume.
In context
if you decrease the volume if you reduce the space with the same amount of mass the density will increase
More examples
- Oil floats on water because it has a lower density.
- The density of the trees leaves little room for paths.
- Increasing the print's density makes its dark areas look darker.
Forms
density · densities
dense adjective — Closely packed into a limited space.
Similar words
- concentration
- Often emphasizes the amount of one substance within a mixture.
- compactness
- Emphasizes close packing rather than the amount per unit.