Where does “esterno” come from?

esterno (Portuguese) comes from New Latin sternum, from Ancient Greek στέρνον, from Proto-Indo-European stern- — forehead, chest, side.

esterno (Portuguese): breastbone, sternum

Definitions

  1. breastbone, sternum

Ancestry of “esterno”, step by step

StepLanguageWordMeaning
1New Latinsternum—
2Ancient Greekστέρνονbreast, chest; seat of the affections, heart;...
3Proto-Indo-Europeanstern-forehead, chest, side
Every word from Proto-Indo-European stern- →Every word from Ancient Greek στέρνον →Every word from New Latin sternum →
esterno — Etymology, Origin & Word History | Etymology Explorer