Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.
Related to torr: torrid
n. pl. torr
A unit of pressure that is equal to approximately 1.316 × 10-3 atmosphere or 133.3 pascals.
[After Evangelista Torricelli.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n, pl torr
(Units) a unit of pressure equal to one millimetre of mercury (133.322 newtons per square metre)
[C20: named after E. Torricelli]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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.
[1945–50; after E. Torricelli]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.