/ ˈdensəti; NAmE / noun ( pl. -ities )
[ U ] the quality of being dense ; the degree to which sth is dense :
low density forest
[ C , U ] ( physics ) the thickness of a solid, liquid or gas measured by its mass per unit of volume :
the density of a gas
[ U ] ( computing ) the amount of space available on a disk for recording data :
a high / double density floppy
early 17th cent.: from French densité or Latin densitas , from densus dense.