plural densities
1
: the quality or state of being dense: such as
a
: the quality of having parts that are close together
the jungle's density
b
: the quality of being difficult to see through
We were surprised by the fog's density.
c
: the quality of being difficult to understand
the density of her writing style
2
: the amount of something in a particular space or area
This part of the country has a high population density. [=many people live in this part of the country]
There has been an increase in (population) density in this area.
3
technical
: the amount of matter in something that is shown by the relationship between its weight and size
metals with different densities
These instruments are used for measuring the density of the atmosphere.
older women who have lost bone density [=whose bones are less solid and heavy]
Cite this Entry
“Density.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/density. Accessed 15 Apr. 2026.
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