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Concentrator   Listen
noun
Concentrator  n.  (Mining)
1.
An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air.
2.
(Firearms) 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.





Collaborative International Dictionary of English 0.48


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"Concentrator" Quotes from Famous Books



... when you get home," advised Miss Briggs. "Let me see, your business sign should read, 'Miss Dean, Imponderable Concentrator.'" ...
— Grace Harlowe's Overland Riders Among the Kentucky Mountaineers • Jessie Graham Flower


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