air mass

noun
Updated on: 8 Jan 2018

Definition of air mass

: 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

Recent Examples of air mass from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'air mass.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of air mass

1882


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