millibar

[ mil-uh-bahr ]
/ ˈmɪl əˌbɑr /

noun

a centimeter-gram-second unit of pressure equal to one thousandth of a bar or 1000 dynes per square centimeter, used to measure air pressure. Abbreviation: mb

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Origin of millibar

First recorded in 1905–10; milli- + bar3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for millibar

millibar
/ (ˈmɪlɪˌbɑː) /

noun

a cgs unit of atmospheric pressure equal to 10 –3 bar, 100 newtons per square metre or 0.7500617 millimetre of mercury
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

Scientific definitions for millibar

millibar
[ mĭlə-bär′ ]

A unit of pressure equal to 0.001 bars. It is equivalent to 100 newtons per square meter, or 0.0145 pounds per square inch. Standard atmospheric pressure at sea level is 1,013.2 millibars.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.