R. F. Kasatkina (Розалия Францевна Касаткина) is a Russian phonologist. Russia (Россия Rossiya) or the Russian Federation ( Rossiyskaya Federatsiya) is a transcontinental Country extending Phonology ( Greek φωνή (phōnē voice sound + λόγος (lógos word speech subject of discussion is the systematic use of sound to encode meaning