Etymology tree Proto-Indo-European *ḱey-der. Ancient Greek κοιμάω (koimáō) Ancient Greek -τήριον (-tḗrion) Ancient Greek κοιμητήριον (koimētḗrion)bor. Latin cimiteriumlbor. Old Polish cmyntarz Polish cmentarz Proto-Indo-European *-nós Proto-Balto-Slavic *-inas Proto-Slavic *-ьnъ Old Polish -ny Polish -ny Polish cmentarny From cmentarz + -ny.