adjective/feruxiˈnoso/
ferruginous
Etymology tree substratebor. Old Latin *fersom Latin ferrum Latin -ūgō Latin ferrūgō, ferrūginis Proto-Indo-European *h₃ed- Proto-Indo-European *-os Proto-Indo-European *h₃édosder.? Proto-Italic *-ŏ̄dsos? Old Latin -ōssus Latin -ōsus Old Spanish -oso Spanish -oso Spanish ferruginoso From Latin ferrūgō, ferrūginis + Spanish -oso.