massperunitvolume

noun
UK /mæs pɜː ˈjuːnɪt ˈvɒljuːm/
US /mæs pɜːr ˈjuːnɪt ˈvɑːljuːm/

Mass per unit volume is how much stuff is packed into a certain amount of space.

The mass per unit volume of this rock is high because it is very heavy for its size.


OTHER MEANINGS

2. A measure of how tightly matter is packed in a substance.

Scientists use mass per unit volume to compare different materials.

3. The ratio of an object's mass to the space it takes up.

The mass per unit volume of ice is less than that of water.

4. A quantity used to describe how heavy something is for its size.

They calculated the mass per unit volume to find out if the block would float.