köken: Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwís Proto-Italic *dwis Old Latin duis Latin bisder. French bi- Latin latus Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Latin laterālislbor. French latéral French bilatéralbor. Proto-Indo-European *-nós Proto-Balto-Slavic *-inas Proto-Slavic *-ьnъ Old Polish -ny Polish -ny Polish bilateralny From French bilatéral +…