Krai (; transliteration: krai or kray) is a term used to refer to seven of Russia's 86 federal subjects. Since the word krai also means border or end, it is used for regions located along the economic and geographic periphery. The formant -krai- in the toponym Ukraine (Ukrainian: Україна; Russian: Украина) and ethnonym 'Ukrainian' derives from this Russian word meaning border, end, edge or brink.