the number of particles per unit volume

mass of some sample per unit volume occupied; density

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.

(medicine) A measure of the amount of mineral in bones, used to estimate the risk of osteoporosis or fractures.

plural of density matrix

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

That has a higher than normal density

plural of density dependence

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

plural of low-density lipoprotein