Millibar,

Definition of Millibar:

1. Older but still common unit of atmospheric pressure, equal to one-thousandth of a bar, about 0.03 inches (0.76 millimeters) of mercury, or about 0.14 pounds per square inch. The newer unit is called kilopascal (equal to 10 millibars).

2. One thousandth of a bar, the cgs unit of atmospheric pressure equivalent to 100 pascals.

How to use Millibar in a sentence?

1. Peak wind speed was 170 knots and pressure dropped to 993 millibars.