mean‧while W2 [sentence adverb]
while something else is happening:
Cook the sauce over a medium heat until it thickens. Meanwhile start boiling the water for the pasta.
2 also in the meanwhile
in the period of time between two events:
The flight will be announced soon. Meanwhile, please remain seated.
I knew I wouldn't get my exam results for several weeks, and I wasn't sure what to do in the meanwhile.
used to compare two things, especially if they are completely different and are happening at the same time:
The incomes of male professionals went up by almost 80%. Meanwhile, part-time women workers saw their earnings fall.