The ability to hold, receive, or absorb / A measure of such ability; volume / The maximum amount that can be held / Capability; the ability to perform some task / The maximum that can be produced.

Filling the allotted space.

plural of capacity

A village in Michigan.

(physics) The capability of a system to absorb heat energy; the amount of thermal energy required to raise the temperature of a system by one temperature unit without any change of phase.

A volume; especially the volume of a cylinder head when the piston is at its lower dead centre.

(transport) The number of people or things that a vehicle is designed to carry. / (ecology) The number of individuals of a particular species that an environment can support.

(management, operations) The percentage of the capacity of a device or system that is being used productively.

(biology) The maximum volume of air that can be discharged from the lungs following maximum inspiration.

lung volume / vital capacity