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Definition of airglow
: light that is observed especially during the night, that originates in the high atmosphere of a planet (such as the earth), and that is associated with photochemical reactions of gases caused by solar radiation
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Recent Examples of airglow from the Web
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A bright night starts with a dull light called airglow, which is found more than 60 miles above the earth’s surface.
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Scientific instruments are sensitive enough to detect it, but not human eyes — until a bright night, when an unexpected alignment of waves in our upper atmosphere amplify that once invisible airglow, making it much brighter.
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That airglow arises when individual gas atoms—previously created when ultraviolet light blasted gas molecules apart—
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'airglow'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of airglow
1949
Learn More about airglow
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See words that rhyme with airglow Britannica.com: Encyclopedia article about airglow
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