A CGS unit of pressure equal to 0.001 millibar, 0.1 pascal, 1 dyne per square centimeter (1 barye), or about 0.002 089 pounds per square foot. The microbar is used commonly in acoustics and sound engineering
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}