airglow

noun air·glow \ -ˌglō \

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

Recent Examples of airglow from the Web

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

in the meaning defined above

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