isr.co.ro : glossary or.ro (organization) Referring to Internet addresses, a suffix that indicates an address at a non-commercial organization in Romania, such as a club or association. Lately, it's also become a fashionable form of address for individuals. For example, me@my.or.ro. Sometimes, the collection of all possible addresses of this type is referred to as the "or.ro domain" or "or.ro hierarchy."