• synonyms


  1. a unit of pressure, being the pressure necessary to support a column of mercury one millimeter high at 0°C and standard gravity, equal to 1333.2 microbars.
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Origin of torr

First recorded in 1945–50; named after E. Torricelli
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for torr

Historical Examples of torr

  • Take only a fraction from the income, and how would the Torr be kept up?

    Johnny Ludlow, Fourth Series

    Mrs. Henry Wood

  • He might have reached the Torr the previous day; but he did not.

  • Taking a round to the Torr first, he drove into the back-yard.

  • They quitted the Torr for the blazing meadows, on their road home again.

  • Why, else, should his poor unquiet spirit haunt the region of the Torr?

British Dictionary definitions for torr


noun plural torr
  1. a unit of pressure equal to one millimetre of mercury (133.322 newtons per square metre)
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Word Origin for torr

C20: named after E. Torricelli
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for torr


unit of pressure, 1949, named for Italian physicist Evangelista Torricelli (1608-1647), inventor of the barometer.

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Online Etymology Dictionary, © 2010 Douglas Harper