Answer:

density

Answer	Crossword Clue
DENSITY	Compactness
DENSITY	Population statistic
DENSITY	Factor in measuring specific gravity

DENSITY	Compression increases it
DENSITY	Quantity per unit of space
DENSITY	Physics calculation
DENSITY	Ratio of mass to volume.
DENSITY	Population level.
DENSITY	Compactness.
DENSITY	Thickness.
DENSITY	Consistency.

DENSITY	Obtuseness
DENSITY	Dullness
DENSITY	Thickness
DENSITY	Mass divided by volume
DENSITY	Slow-wittedness
DENSITY	Mass-to-volume ratio