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millibar

millibar

3 6.0
A measure of air pressure used in weather reports
  • noun
  • /ˈmɪlɪˌbɑr/
  • Specialized
translation icon : milibar
  • Average atmospheric pressure was 992.7 millibars (mb).
  • millibars of pressure
  • level at millibars
  • hundred millibars

Examples

  • Meteorologists recorded a drop in pressure to 950 millibars just before the storm hit.

  • This is the first slide today, the 500 millibar chart.

  • Satellite 's got it at 999 millibars now.

  • Air pressure certainly causes changes in the weather, yet a 5-millibar change in the pressure today may lead to undetermined effects five days from now.

    Academic text (1995)
  • The pressure was 28.87 inches or 978 millibars.

    Blog text (1)
  • Nadine was moving to the east at 14 mph (22 kph) and had a minimum central pressure of 1000 millibars.

    Blog text (6)
  • Sandy's minimum central pressure at the time of landfall was 946 millibars or 27.93 inches.

    Blog text (2)
  • The weather forecast indicated that the atmospheric pressure was 1020 millibars today.

  • On the summit of the mountain, the air pressure measured only 300 millibars.

How High

atmosphere
  • Specialized
12 6.8
bar
  • Specialized
20 7.3
millibar
  • Specialized
3 6.0
pascal
  • Specialized
1 6.4

Surface Forms

millibar singular
millibars plural

Morphology

millibar = bar (transparent) = milli + bar

Built by the productive metric prefix 'milli-' plus the unit 'bar', meaning one thousandth of a bar is directly derivable.

Etymology

The word millibar is made of milli- meaning 'one thousandth' and bar meaning 'pressure' or 'weight', the same bar in barometer. So a millibar is a small unit of air pressure, one thousandth of a bar, which is why weather reports use it to show changes in atmospheric pressure.