(physics) The unit of density in the system of Planck units, equal to one Planck mass in one Planck volume.

The mass of any given substance contained in unit volume.

A measure of the number of characters that are represented in a specified unit of text stream. / The number of strokes required to form a Chinese character.

mass of some sample per unit volume occupied; density

the number of particles per unit volume

That has a higher than normal density

plural of density matrix

(quantum mechanics) A matrix that describes the quantum state of a physical system.

Any of a class of lipoproteins that transport cholesterol to the liver from other tissue; high levels may decrease the risk of coronary heart disease.

Any of a class of lipoproteins that transport cholesterol around the bloodstream; high levels may increase the risk of coronary heart disease.