Where does “elixir oral” come from?

elixir oral (Portuguese) comes from Portuguese oral, from Latin ōrālis, from Latin ōs, from Proto-Italic ōs, from Proto-Indo-European h₃ésth₁ — bone.

Ancestry of “elixir oral”, step by step

elixir oral traces back through two separate lines of ancestry.

via Portuguese oral

StepLanguageWordMeaning
1Portugueseoraloral
2Latinōrālisoral
3Latinōsmouth
4Proto-Italicōsmouth
5Proto-Indo-Europeanh₃ésth₁bone

via Portuguese elixir

StepLanguageWordMeaning
1Portugueseelixirelixir; a magical potion
Every word from Proto-Indo-European h₃ésth₁ →Every word from Proto-Italic ōs →Every word from Latin ōs →