Density
From Activating Evolution
1: the quality or state of being dense
2: the quantity 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, or energy) per unit usually of space (as length, area, or volume)
- c: the average number of individuals or units per space unit <a population density of 500 per square mile> <a housing density of 10 houses per acre>
3: the degree of opacity of a translucent medium
4: the common logarithm of the opacity.
