| 释义 |
den·si·ty
\ˈden(t)səd.ē, -)sətē, -)stē, -i\ noun
(-es)
Etymology: French or Latin; French densité, from Latin densitat-, densitas, from densus + -itat-, -itas -ity
1. : the quality or state of being dense : closeness of texture or consistency : a crowded condition
< a fog of great density >
< the great density of growth in the jungle >
< made difficult by the density of his style >
2.
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 area, length, or volume) — see energy density, flux density, surface density
c. : the average number of individuals or units per space unit
< a density of population of about 100 per square mile >
3. : extreme stupidity
4. of an inflorescence : compactness
5.
a. : the degree of opacity of any translucent medium : the common logarithm of the opacity
b. : the degree of darkening of a photographic film or positive transparency approximately proportional to the mass of metallic silver or dye per unit area |