What does "airglow" mean?

A faint illumination in the sky due to photochemical luminescence in the upper atmosphere, now rarely observed by earthbound humans without the assistance of instruments.

What is a synonym for "airglow"?

Common synonyms include: electroglow, electroglow.

Airglow

noun

noun ·2 syllables ·Rare ·Advanced level

Definitions

Noun

1
A faint illumination in the sky due to photochemical luminescence in the upper atmosphere, now rarely observed by earthbound humans without the assistance of instruments. uncountable, usually

Synonyms

All synonyms

electroglow electroglow

Etymology

From air + glow.

Related phrases

apparent magnitude

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.