covolume
/kɑvˈɒlvəm/Definitions
1. noun
The volume of a given area or space per unit of population or other variable.
“The city’s co-volume has increased significantly due to the rising population.”
2. noun
The average volume per person in a given area or space.
“The co-volume of the new stadium is impressive, with over 10,000 seats per acre.”