noun
[ U ] ( technical ) an agreement between two or more airlines to carry each other's passengers and use their own set of letters and numbers for flights provided by another airline
noun
[ U ] ( technical ) an agreement between two or more airlines to carry each other's passengers and use their own set of letters and numbers for flights provided by another airline
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005