millibar

noun

mil·​li·​bar ˈmi-lə-ˌbär How to pronounce millibar (audio)
: a unit of atmospheric pressure equal to ¹/₁₀₀₀ bar or 100 pascals

Examples of millibar in a Sentence

Recent Examples on the Web Specifically, a storm must drop at least 24 millibars over a 24-hour period to qualify as a bomb cyclone, according to the National Oceanic and Atmospheric Administration. NBC News, 13 Jan. 2024 The actual highest drop in pressure seen in this storm easily surpassed that benchmark — falling by 22 millibars over 24 hours, Behringer said. Rong-Gong Lin Ii, Los Angeles Times, 7 Feb. 2024 The central pressure dropped to an incredible 944 millibars, which is on par with the central pressure of a strong hurricane in the tropics. Ian Livingston, Washington Post, 1 Feb. 2024 Weather models forecast the storm’s atmospheric pressure to drop to near or below 980 millibars — comparable to some hurricanes. Dan Stillman, Washington Post, 15 Dec. 2023 Satellite images show a classic major hurricane, with a clear visible eye, and its central pressure had dropped to 928 millibars. Dinah Voyles Pulver, USA TODAY, 9 Sep. 2023 The hurricane center had forecast Idalia to continue strengthening before landfall, however its barometric pressure rose quickly Wednesday morning – from 940 millibars at 6 a.m. to 949 millibars at landfall at 7:45 a.m. Dinah Voyles Pulver, USA TODAY, 30 Aug. 2023 For context, the sea-surface pressure on the last storm fell to 984 millibars as its eye went over San Francisco — lower than anticipated with this next system. Gerry Díaz, San Francisco Chronicle, 24 Mar. 2023 For instance, recent output from the HWRF hurricane model has shown pressures dipping close to 900 millibars at peak, which would easily equate to Category 4- or 5-equivalent intensity. Ian Livingston, Washington Post, 11 May 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'millibar.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

International Scientific Vocabulary

First Known Use

1910, in the meaning defined above

Time Traveler
The first known use of millibar was in 1910

Dictionary Entries Near millibar

Cite this Entry

“Millibar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/millibar. Accessed 14 Jun. 2024.

Kids Definition

millibar

noun
mil·​li·​bar ˈmil-ə-ˌbär How to pronounce millibar (audio)
: a unit used in measuring atmospheric pressure equal to ¹⁄₁₀₀₀ bar

Medical Definition

millibar

noun
mil·​li·​bar ˈmil-ə-ˌbär How to pronounce millibar (audio)
: a unit of atmospheric pressure equal to ¹/₁₀₀₀ bar or 1000 dynes per square centimeter
abbreviation mbar

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