(sciences) A measure of the density of a material. The ratio of the density of a substance to the density of water at the same temperature. It is dimensionless and therefore has no units.

plural of density

A densitometer.

A device that measures the optical density of a material. / A device that measures the specific gravity of a substance; a densimeter.

The quality of being dense, especially in the sense of limited mental capacity.

(probability theory) Any function whose integral over a set gives the probability that a random variable has a value in that set

plural of densimeter

plural of densitometer

(physics) The low-energy, ground state of a metal in which densities of the electron spins and charges follow a regular spatial distribution

Average population per unit area; especially, the average number of people who live on each square kilometer (or square mile) of land.