air·glow (âr gl  )n. A low- or middle-latitude, more or less steady, faint photochemical luminescence in the upper atmosphere. |
airglow [ˈɛəˌgləʊ]
n
(Earth Sciences / Physical Geography) the faint light from the upper atmosphere in the night sky, esp in low latitudes
| airglow (ârgl) A faint photochemical luminescence in the upper atmosphere caused by the collision of x-rays and charged particles from the Sun with atoms and molecules, especially of oxygen, sodium, and the hydroxyl radical (OH). Airglow is strongest over low and middle latitudes. |
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