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Pronunciation varies by accent · noun
(aviation) The registration number that appears on the rear sections of aircraft..
Use tailnumber when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Tailnumber means (aviation) The registration number that appears on the rear sections of aircraft..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use tailnumber where its definition matches the intended context.
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