(physics) The numerical extent to which a quantum state is filled (in a system of many, identical quantum particles)

(euphemistic) Prostitution.

A vehicle with a large number of persons in it. / More specifically, a vehicle carrying passengers who number over a certain threshold (for instance, at least two passengers).

Alternative spelling of high-occupancy vehicle

plural of high occupancy vehicle

plural of high-occupancy vehicle

as part of an occupation