Donetsk /dəˈnɛtsk/ noun2 •A city, a municipal and regional administrative centre, an as well as, a raion of Donetsk Oblast in the Donbas region, in eastern Ukraine, on the Kalmius river. •An oblast in the Donbas region, in eastern Ukraine. Seat: Kramatorsk; former seat: Donetsk (prior to the Donbas War, where Russia occupied and set up puppet countries)