Russian седьмой

← Proto-Balto-Slavic *septmas (inherited)

← Proto-Indo-European *septmós (inherited)

← Old East Slavic седьмъ (inherited)

← Old East Slavic седмъ (mention)

← Old East Slavic семъ (mention)

← Russian 7-ой (link)

← Proto-Slavic *sedmъ (inherited)

← Proto-Slavic (mention)

← Proto-Slavic (mention)