Vacuum /ˈvækjuːm/ (lat. Vacuum) – located in a vessel, pressure atm. The state of a gas that is significantly under pressure. The state of a gas in vacuum devices is the relationship between the length of free movement of molecules (or atoms) l and the dimension d characteristic of the same device or process (for example, the space between the walls of a vessel, the diameter of a tube, the space between electrodes).
EX: Miners use the vacuum to clean up loose rock fragments, dust, and other debris that accumulate during drilling and blasting operations