meantime [adverb] [not gradable] - until something expected happens, or while something else is happeningIt's going to take several days for my car to be repaired, so meanwhile I'm borrowing one.Carl is starting college in September. Meanwhile, he's travelling around Europe.If I do the shopping, could you clean the house meanwhile?
MEANWHILE
Meaning of MEANWHILE in English
Cambridge English vocab. Кембриджский английский словарь. 2012