Where does “costula” come from?

costula (Late Latin) comes from Latin costa, from Proto-Indo-European kost-.

Ancestry of “costula”, step by step

StepLanguageWordMeaning
1Latincostaa rib; a side, a wall
2Proto-Indo-Europeankost-—

Words derived from “costula”

Every word from Proto-Indo-European kost- →Every word from Latin costa →
costula — Etymology, Origin & Word History | Etymology Explorer