The word 'belorussian' is correct and can be used in written English.
It is an adjective that refers to something or someone from Belarus, a country in Eastern Europe. Example: The Belorussian flag features a red and green stripe with a decorative ornament on the left side.
Union of Brest-Litovsk, an agreement in 1596 that united with the Roman Catholic Church several million Ukrainian and Belorussian Orthodox Christians living under Polish rule in Lithuania.
In 1919 it became the capital of the Belorussian republic.
One night, they shared the news of their decision with Olena Pritula and her longtime partner, Pavel Sheremet, a forty-two-year-old Belorussian journalist who had left Minsk under political pressure, then made his way to Moscow, and finally landed in Kiev, in 2013.
The three brothers sought refuge separately in the thickly wooded forests dominating the Belorussian countryside.
"Because of the law we have in Belarus, we can't say anything we think about Belorussian politics," she wrote in earnest, imperfect English.
Administratively, the oblast was made part of the Russian S.F.S.R., even though it was separated from the parent republic by about 225 miles (360 km) of territory belonging to the Lithuanian, Belorussian, and Latvian republics of the U.S.S.R.
July 7, 1887 Vitsyebsk, Belarus March 28 , 1985Saint-Paul, France Marc Chagall, (born July 7 , 1887 Vitebsk, Belorussia, Russian Empire [now in Belarus] died March 28 , 1985 Saint-Paul, Alpes-Maritimes, France) Belorussian-born French painter, printmaker, and designer.
In 2008 the Ust-Ordyn Buryat autonomous okrug (district), inhabited mainly by Russians (about 60 percent) but also by Buryat (about 30 percent) and some Tatars, Ukrainians, and Belorussians, was merged with the Irkutsk oblast.
There were several million Belorussians in the 17th 18th century belonging to the Kievan metropolitanate.
Slavs are usually subdivided into East Slavs (Russians, Ukrainians, and Belorussians), West Slavs (Poles, Czechs, Slovaks, and Lusatians [Sorbs]), and South Slavs (Bosnians, Serbs, Croats, Slovenes, Macedonians, and Bulgars).
The majority of the population, however, was made up of East Slavs (Russians, Ukrainians, and Belorussians); these groups together made up more than two-thirds of the total population in the late 1980s.
