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Meaning of airglow | Babel Free

Noun CEFR B1

Definitions

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

CEFR level

B1
Intermediate
This word is part of the CEFR B1 vocabulary — intermediate level.

See also

airgram airgraph airgraphics airgroup airgun Airhart

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