A unit of atmospheric pressure equal to one hundredth of a bar, commonly used in weather measurements.
From 'centi-' (one hundredth) + 'bar' (a unit of pressure from Greek 'baros' meaning weight). The centibar became standard in meteorology in the 20th century.
Weather forecasters rarely say 'centibar' anymore—they switched to hectopascals (100 centibars = 1 hectopascal), which shows how even scientific units can go out of fashion when new standards prove more practical!
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