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Meaning of greyline | Babel Free

Noun CEFR B2

Definitions

A transition line, coinciding with a twilight zone (terminator), where a change in the propagation of radio waves is observed.
uncountable
Synonym of twilight zone (“terminator”).
broadly, uncountable

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

greylist Greymouth greymuzzle greynaissance greyness greyout