English Etymology Istr(ia) + -o- Pronunciation (UK) IPA(key): /ˈɪstɹəʊ/ Prefix Istro- denoting Istrian origin or character, or a variety of [the prefixed element] associated with or pertaining to Istria Istro-Romanian Anagrams riots, roist, rosti, rotis, rösti, tiros, torsi, triosWikiwand - on Seamless Wikipedia browsing. On steroids.