since then, by now, in the meantime (contrasting between the current state and a known past state) · in the meantime (at the same time as another process, typically in another location) · in the meantime (specifically until the other process is finished)
meanwhile (at the same time as) · meanwhile (until now) · now, currently; for now
eş: podczas gdy, jednak
köken: Etymology tree Old Polish temczasem Polish tymczasem Inherited from Old Polish temczasem. By surface analysis, univerbation of tym + czasem. Compare Kashubian timczasã.