1. a unit of atmospheric pressure equal to one millionth of a bar
Usage: meteorology; physics

Examples

• The atmospheric pressure was measured at 50 microbars.
• Scientists use microbars to measure very small pressure changes.
• The instrument can detect pressure variations as small as one microbar.
• Weather stations record data in microbars for precise measurements.
• The pressure difference was only a few microbars.
• Researchers calibrated their equipment to read in microbars.