relative density

noun, Physics.

specific gravity.

Origin

1875-80

Examples from the web for relative density

The important point is the relative density of the air.
Shrub canopy cover and density by species were converted to relative cover and relative density.
relative density index is one measurement used to quantify the densities of forest stands.

British Dictionary definitions for relative density

relative density

noun

the ratio of the density of a substance to the density of a standard substance under specified conditions. For liquids and solids the standard is usually water at 4°C or some other specified temperature. For gases the standard is often air or hydrogen at the same temperature and pressure as the substance d See also specific gravity, vapour density

relative density in Science

relative density
The ratio of the density of one substance to that of a reference substance, typically water. See more at specific gravity.