[1] : The Collaborative International Dictionary of English v.0.48

vacuum \vac"uum\ va^k"-uu^m, n.; pl. e. vacuums
   va^k"-uu^mz, l. vacua va^k"-u.a. l., fr.
   vacuus empty. see vacuous.
   1. physics a space entirely devoid of matter called also,
      by way of distinction, absolute vacuum; hence, in a more
      general sense, a space, as the interior of a closed
      vessel, which has been exhausted to a high or the highest
      degree by an air pump or other artificial means; as, water
      boils at a reduced temperature in a vacuum.
      1913 webster
      1913 webster

   2. the condition of rarefaction, or reduction of pressure
      below that of the atmosphere, in a vessel, as the
      condenser of a steam engine, which is nearly exhausted of
      air or steam, etc.; as, a vacuum of 26 inches of mercury,
      or 13 pounds per square inch.
      1913 webster

   vacuum brake, a kind of continuous brake operated by
      exhausting the air from some appliance under each car, and
      so causing the pressure of the atmosphere to apply the
      brakes.

   vacuum pan technol., a kind of large closed metallic
      retort used in sugar making for boiling down sirup. it is
      so connected with an exhausting apparatus that a partial
      vacuum is formed within. this allows the evaporation and
      concentration to take place at a lower atmospheric
      pressure and hence also at a lower temperature, which
      largely obviates the danger of burning the sugar, and
      shortens the process.

   vacuum pump. same as pulsometer, 1.

   vacuum tube phys.,
      a a glass tube provided with platinum electrodes and
          exhausted, for the passage of the electrical
          discharge; a geissler tube.
      a any tube used in electronic devices, containing a
          vacuum and used to control the flow of electrons in a
          circuit, as a vacuum diode, triode, tetrode, or
          pentode.

   vacuum valve, a safety valve opening inward to admit air to
      a vessel in which the pressure is less than that of the
      atmosphere, in order to prevent collapse.

   torricellian vacuum. see under torricellian.
      1913 webster
see also:
vacuums vacua vacuous vacuum brake vacuum pan vacuum pump 
pulsometer vacuum tube vacuum valve torricellian vacuum torricellian 

Brake >> B Words
Brake, definition of term: Brake
brake_pag1.html

Vacuum >> V Words
Vacuum, definition of term: Vacuum
vacuum_pag1.html

Vacuum Cleaner >> V Words
Vacuum Cleaner, definition of term: Vacuum Cleaner
vacuum+cleaner_pag1.html

Vacuum Tube >> V Words
Vacuum Tube, definition of term: Vacuum Tube
vacuum+tube_pag1.html

Vacuum Pump >> V Words
Vacuum Pump, definition of term: Vacuum Pump
vacuum+pump_pag1.html

Disc Brake >> D Words
Disc Brake, definition of term: Disc Brake
disc+brake_pag1.html

VACUUM BRAKE CO., The vacuum automatic brake. Engineers: Alfred L. Sacré &...
...One of these was Westinghouse's air brake and the other was the vacuum brake. The present item was published by the Vacuum.....One of these was Westinghouse's air brake and the other was the vacuum brake. The present item was published by the Vacuum.....and gives a detailed illustrated description of the brake and its action. It is published..
http://www.polybiblio.com/elton/2499.html, score=100, date indexed=February 5, 2005, 6:19 am

Vacuum Brake Booster on The Jeep CJ3B Page
...Apparently as the vacuum powered brake booster was offered as an accessory early on in CJ.....Your vacuum boost system was probably put on by sombody who wasn't pleased with the.....Tom Erichsen responded, "My '58 CJ-3B also has a brake vacuum assist mounted on the front left..
http://www.film.queensu.ca/CJ3B/Tech/BrakeBooster.html, score=94, date indexed=April 2, 2005, 12:06 am

D622-99(2005) Standard Test Methods for Rubber Hose for Automotive Air and...
...brake and vacuum brake systems, either on a single motor vehicle or as connecting or transmission lines in.....D622-99(2005) Standard Test Methods for Rubber Hose for Automotive Air and Vacuum Brake.....J1402 Automotive Air Brake Hose and Hose Assemblies.. J1403 Vacuum Brake Hose.. Index..
http://www.astm.org/DATABASE.CART/REDLINE_PAGES/D622.htm, score=88, date indexed=October 9, 2005, 4:19 pm

Vacuum Brake Booster Test Procedure
...Watch the vac guage as a friend depresses the brake pedal. It should dip as the pedal is.....Stop the engine, disconnect the booster vacuum line and cap the port on the manifold.....Vacuum Brake Booster Test Procedure ..by H Steve Dolan.. If the booster is working correctly, it..
http://www.type2.com/library/brakes/vacboo.htm, score=77, date indexed=February 16, 2005, 10:48 am

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