This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The quality or condition of being dense.

n. The quantity of something per unit measure, especially per unit length, area, or volume.

n. The mass per unit volume of a substance under specified conditions of pressure and temperature.

n. Computer Science The number of units of useful information contained within a linear dimension.

n. The number of individuals, such as inhabitants or housing units, per unit of area.

n. The degree of optical opacity of a medium or material, as of a photographic negative.

n. Thickness of consistency; impenetrability.

n. Complexity of structure or content.

n. Stupidity; dullness.

n. A measure of the amount of matter contained by a given volume.

n. The ratio of one quantity to that of another quantity.

n. The probability that an event will occur, as a function of some observed variable.

n. The quality of being dense, close, or thick; compactness; -- opposed to rarity.

n. The ratio of mass, or quantity of matter, to bulk or volume, esp. as compared with the mass and volume of a portion of some substance used as a standard.

n. Depth of shade.

n. The quality of being dense, close, or compact; closeness of constituent parts; compactness, actual or relative.

n. The mass or amount of matter per unit of bulk.

n. In electricity, the quantity of electricity per unit of volume at a point in space, or the quantity of electricity per unit of area at a point on a surface.

n. In photography, opacity of the developed film of a negative.

n. the amount per unit size

n. the spatial property of being crowded together

"The question supplies an important clue: the word "density.""

rarity   

spacing    spatial arrangement   

gravimetric density of gunpowder    stem density    optical density    density in phase    magnetic density    flux density    dynamic density    vapor density   

energy density    charge density   

compactness   

intensity    propensity   

velocity    temperature    distribution    thickness    concentration    frequency    stability    dimension    intensity    flow