Where does “teroxide” come from?

teroxide (English) comes from English oxide, from French oxide, from French acide, from Latin acidus, from Latin aceō, from Proto-Italic akēō, from Proto-Indo-European h₂eḱ-éh₁-ye-ti, from Proto-Indo-European h₂eḱ- — sharp.

Ancestry of “teroxide”, step by step

teroxide traces back through two separate lines of ancestry.

via English oxide

StepLanguageWordMeaning
1EnglishoxideA binary chemical compound of oxygen with another...
2FrenchoxideObsolete spelling of oxyde
3Frenchacideacid, acidic, sour, tart; acid, acidic; acid
4Latinacidussour, tart, acid, bitter; harsh, grating, rough,...
5Latinaceōto be sour
6Proto-Italicakēōbe sharp-tasting, be sour
7Proto-Indo-Europeanh₂eḱ-éh₁-ye-ti
8Proto-Indo-Europeanh₂eḱ-sharp

via English ter

StepLanguageWordMeaning
1EnglishterEye dialect spelling of to
Every word from Proto-Indo-European h₂eḱ-Every word from Proto-Indo-European h₂eḱ-éh₁-ye-tiEvery word from Proto-Italic akēō