Where does “hepatitis externa” come from?

hepatitis externa (English) comes from English hepatitis, from Latin hēpatītis, from Ancient Greek ἧπαρ, from Proto-Hellenic eyékʷər, from Proto-Indo-European Hyékʷr̥ — liver.

Ancestry of “hepatitis externa”, step by step

hepatitis externa traces back through two separate lines of ancestry.

via English hepatitis

StepLanguageWordMeaning
1EnglishhepatitisInflammation of the liver, sometimes caused by a...
2Latinhēpatītis
3Ancient Greekἧπαρliver
4Proto-Helleniceyékʷər
5Proto-Indo-EuropeanHyékʷr̥liver

via English la:externa

StepLanguageWordMeaning
1Englishla:externa
Every word from Proto-Indo-European Hyékʷr̥Every word from Proto-Hellenic eyékʷərEvery word from Ancient Greek ἧπαρ