torr(redirected from Millimetre of mercury)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A unit of pressure sufficient to support a 1-mm column of mercury at 0°C against the standard acceleration of gravity at 45° north latitude (980.621 cm/s2); equivalent to 1333.224 dynes/cm2, 1.333224 millibars, 1.35951 cm of H2O, 133.3224 newtons/m2 (or Pa); 1 atmosphere (atm) equals 760 Torr.
Farlex Partner Medical Dictionary © Farlex 2012
Torricelli,Evangelista, Italian scientist, 1608-1647.
torr - a unit of pressure.
torricellian vacuum - a vacuum above the mercury in a barometer tube.
Medical Eponyms © Farlex 2012