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

torricellian \tor`ricel"lian\, a.
   of or pertaining to torricelli, an italian philosopher and
   mathematician, who, in 1643, discovered that the rise of a
   liquid in a tube, as in the barometer, is due to atmospheric
   pressure. see barometer.
   1913 webster

   torricellian tube, a glass tube thirty or more inches in
      length, open at the lower end and hermetically sealed at
      the upper, such as is used in the barometer.

   torricellian vacuum physics, a vacuum produced by filling
      with a fluid, as mercury, a tube hermetically closed at
      one end, and, after immersing the other end in a vessel of
      the same fluid, allowing the inclosed fluid to descend
      till it is counterbalanced by the pressure of the
      atmosphere, as in the barometer. --hutton.
      1913 webster
see also:
barometer torricellian tube torricellian vacuum 

[2] : 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 

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Vacuum Cleaner, definition of term: Vacuum Cleaner
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Vacuum Tube, definition of term: Vacuum Tube
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Definition of Torricellian from dictionary.net
...Torricellian tube, a glass tube thirty or more inches in length, open at the lower end and.....Torricellian vacuum (Physics), a vacuum produced by filling with a fluid, as mercury, a tube.....Torricellian vacuum (Physics), a vacuum produced by filling with a fluid, as mercury, a tube..
http://www.dictionary.net/torricellian, score=100, date indexed=June 22, 2005, 11:29 pm

Torricellian+vacuum - Definition of Torricellian+vacuum by Webster Dictionary
...Includes dictionary browser, morphological search by meaning of Torricellian+vacuum, thesaurus, related.....Torricellian+vacuum - Definition of Torricellian+vacuum is presented by 1913 online Webster's.....Torricellian vacuum..Torpedo boat.. You may also try the words separately:Torricellian..
http://www.webster-dictionary.net/definition/Torricellian+vacuum, score=74, date indexed=August 4, 2005, 9:56 pm

Torricellian vacuum - Definition of Torricellian vacuum by Webster's Online...
...Definition of Torricellian vacuum is provided by 1913 Webster's Dictionary, WordNet Lexical Database..
http://www.webster-dictionary.org/definition/Torricellian%20vacuum, score=60, date indexed=April 25, 2005, 7:02 pm

Torricellian - Definition of Torricellian by Webster Dictionary
...Includes dictionary browser, morphological search by meaning of Torricellian, thesaurus.....Torricellian vacuum.. (Physics) a vacuum produced by filling with a fluid, as mercury, a tube.....Torricellian tube..a glass tube thirty or more inches in length, open at the lower end and..
http://www.webster-dictionary.net/definition/Torricellian, score=47, date indexed=August 5, 2005, 2:02 am

TORRICELLIAN definition
...Torricellian tube, a glass tube thirty or more inches in length, open at the lower end and.....physics> Torricellian vacuum, a vacuum produced by filling with a fluid, as mercury, a tube.....Home/T/to/TORRICELLIAN .. Medical Dictionary Search Engine .. September is National..
http://www.books.md/T/dic/torricellian.php, score=38, date indexed=April 7, 2005, 2:19 pm

Torricellian+tube - Definition of Torricellian+tube by Webster Dictionary
...Includes dictionary browser, morphological search by meaning of Torricellian+tube.....Torricellian+tube - Definition of Torricellian+tube is presented by 1913 online Webster's.....Torricellian..Torricellian tube..Torricellian vacuum..Torrid..Torrid zone..Torridity..
http://www.webster-dictionary.net/definition/Torricellian+tube, score=34, date indexed=August 6, 2005, 4:26 am

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