Weight per unit volume. For fuels, this is usually expressed as pounds per cubic foot; for soils, grams per cubic centimeter. see also: Compactness

The weight per unit of volume of nondisturbed soil that has been completely dried, commonly expressed as grams per cubic centimeter (g/cc); a means of characterizing the amount of macropores and compa [..]

The dry mass of soil per unit bulk volume of soil. Expressed as kg/m-3 or g/cm3.

The ratio of the weight of a material to its over-all volume (including any inherent porosity).

The density of soil, i.e., the weight of soil divided by its volume. The BD of agricultural soils normally ranges from 1.0 to 1.6 g/cm3.

The mass required to occupy a specific unit of volume.

Weight of a unit of a material, in powdered or granular form, including voids (air) inherent in the material.

The mass of powder in a unit volume. Note this is not the true density of the substance, which is the mass per unit volume in a single crystal.

the mass of a unit volume of soil, generally expressed in gm/cm3. The volume includes both solids and pores. Thus soils that are light and porous will have low bulk densities, while heavy or compact soils will have high bulk densities.

Bulk density may be described as the mass per unit volume of a material, which includes both internal voids and those between constituent particles. A material’s bulk density is an important physical property used by engineers when designing plant and may be described as “free flowing” or non compacted and as “tapped” or compacted.

The mass of a particulate material (including voids) in a unit volume

The mass of soil per unit volume.  A measure of the ratio of pore space to solid materials in a given soil.  Expressed in units of grams per cubic centimeter of oven dry soil.