speedbooster

speed +‎ booster

speedbooster (plural speedboosters)

1. (photography) A secondary lens mounted between the camera and a photographic lens so as to reduce the central part of an image obtained by the objective lens while concentrating the light rays on a smaller area.
2. (rare) Something that boosts speed.
   • 2000 March 6, JnWPalomo, “I need Renegades FastFavs!!”, in alt.games.starsiege.tribes‎ (Usenet):

     Especially useful for D&D missions, speedboosters (beacons) will boost you in the direction you are already traveling, even DOWN, best used in the air while initially jetting toward nme base, limited to 3, use wisely.

   • 2001 January 24, Frank van Schie, “Spoonbot tree question”, in alt.games.starsiege.tribes‎ (Usenet):

     Man, I wish I could do that... Then again, a few speedboosters help :-)

   • 2001 May 8, Bill McCarthy, “TAN: Talkin bout Tribes! (was Re: TAN: Survivor (spoilers))”, in rec.arts.sf.written.robert-jordan‎ (Usenet):

     In T1 Renegades, speedboosters are stored as beacons.

   • 2005 July 6, mat...@gmail.com, “Re: Wireless networks”, in alt.fan.cecil-adams‎ (Usenet):

     Is this the same as "MIMO" that I see mentioned in some ads? Some also talk about a speedbooster or coverage-booster, seemingly separate from MIMO.

• teleconverter