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Pronunciation varies by accent · noun
(strictly, technical) A transition line, coinciding with a twilight zone (terminator), where a change in the propagation of radio waves is observed..
Use greyline when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Greyline means (strictly, technical) A transition line, coinciding with a twilight zone (terminator), where a change in the propagation of radio waves is observed..
Common synonyms include twilight zone.
The opposite depends on the specific sense.
Use greyline where its definition matches the intended context.
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