concentrator
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English
Etymology
From concentrate + -or.
Noun
concentrator (plural concentrators)
- One who concentrates.
- 1960, Dissertation Abstracts, volume 20, page 4007:
- Experienced classroom teachers are well acquainted with the attention-seeker, the shy girl, the aggressive boy, the poor concentrator, the slow student […]
- (telecommunications) A hub.
- (mining) An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air.
- (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.
Derived terms
References
- Edward H[enry] Knight (1877) “Concentrator”, in Knight’s American Mechanical Dictionary. , volumes I (A–GAS), New York, N.Y.: Hurd and Houghton , →OCLC.