This is the 1135th most frequent Russian word.
всероссийского
"Nationwide" or "all-Russian."
Used as an adjective describing the scale of the events, showing they pertain to all of Russia.
Всероссийского масштаба события требуют тщательной подготовки.
Events of an all-Russian scale require thorough preparation.
Refers to ownership or participation in a championship for all of Russia, functioning as an attributive adjective.
Этот спортсмен является победителем всероссийского чемпионата.
This athlete is the winner of the all-Russian championship.
Describes the level or standard of the exhibition emphasizing its national importance.