volume vol·ume (vŏl'yōōm, yəm)
n.
The amount of space occupied by a threedimensional object or region of space, expressed in cubic units.
The capacity of such a region or of a specified container, expressed in cubic units.
volume (vŏl'ym) Pronunciation Key

In mathematics, the amount of space occupied by an object measured in three dimensions, expressed in cubic units. In physics, the loudness of a sound.