a centimeter-gram-second unit of pressure, equal to one millionth of a bar; one dyne per square centimeter.
Also called barye.

1915–20; micro- + bar3

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American Heritage
Science Dictionary
microbar   (mī'krō-bär')  Pronunciation Key 
A unit of pressure equal to one millionth (10-6) of a bar.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Microbar means a unit of pressure commonly used in acoustics and is equal to one dyne per square centimeter.
The pressure variations in a sound wave are measured in terms of a unit borrowed from meteorology called the microbar.
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