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air mass
noun
: a body of air extending hundreds or thousands of miles horizontally and sometimes as high as the stratosphere and maintaining as it travels nearly uniform conditions of temperature and humidity at any given level
Examples of air mass in a Sentence
Recent Examples on the Web
Our soupy air mass promotes the chance for some hit-or-miss downpours into the evening.
—Ian Livingston, Washington Post, 24 July 2024
This bout of storms is caused by a cool air mass from Canada meeting the heat dome that has brought extreme temperatures across much of the Lower 48 in recent weeks, the weather service said.
—Patrick Smith, NBC News, 16 July 2024
Thunderstorms usually love this type of air mass and may be most prone to developing in the afternoon and evening hours, with some rumbles possible into overnight hours.
—A. Camden Walker, Washington Post, 12 July 2024
This gives the air a negative charge and creates an unstable air mass in the lower part of the cloud.
—Mariyam Muhammad, The Enquirer, 5 July 2024
See all Example Sentences for air mass
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'air mass.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1882, in the meaning defined above
Dictionary Entries Near air mass
Cite this Entry
“Air mass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/air%20mass. Accessed 1 Oct. 2024.
Kids Definition
air mass
noun
: a body of air extending hundreds or thousands of miles sideways and sometimes as high as the stratosphere and having nearly the same conditions of temperature and humidity at any single level
More from Merriam-Webster on air mass
Britannica.com: Encyclopedia article about air mass
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