Where does “jupitérien” come from?
jupitérien (French) comes from French Jupiter, from Latin iuppiter, from Proto-Italic djous patēr, from Proto-Italic *djous, from Proto-Indo-European dyḗws, from Proto-Indo-European dyéws, from Proto-Indo-European dyew- — to be bright; sky, heaven.
jupitérien (French): Jovian
Ancestry of “jupitérien”, step by step