| den�si�ty Pronunciation: 'den(t)-s&-tE Function: noun Inflected Form(s): plural -ties Date: 1603 1 : the quality or state of being dense 2 : the quantity per unit volume, unit area, or unit length: as a : the mass of a substance per unit volume b : the distribution of a quantity (as mass, electricity, or energy) per unit usually of space (as length, area, or volume) c : the average number of individuals or units per space unit <a population density of 500 per square mile> <a housing density of 10 houses per acre> |