DENSITY, noun 1. Closeness of constituent parts; compactness. density is opposed to rarity; and in philosophy, the density of a body indicates the quantity of matter contained in it, under a given bulk. If a body of equal bulk with another is of double the density it contains double the quantity of matter. 2. Thickness; as the density of fog.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI