concentrator

One who concentrates.

Communications, Electrical engineering, Engineering, Natural sciences, Physical sciences, Telecommunications A hub.

Business, Mining An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air.

Engineering, Firearms, Government, Military, Natural sciences, Physical sciences, Politics, Tools, War, Weaponry A frame or ring of wire or hard paper fitting into the cartridge case used in some shotguns, and holding the shot together when discharged, to secure close shooting; also, a device for slightly narrowing the bore at the muzzle for the same purpose.