Uranus represents rupture and originality: what in you refuses to fit a mold, seeks freedom, and sometimes triggers sudden change. The sign it occupies changes slowly (about 7 years per sign): it marks an entire generation more than a precise individual trait — it is the house it occupies that most personalizes its reading.
Uranus was discovered in 1781: it does not belong to the set of planets known to ancient astrology (Sun through Saturn, the "seven classical planets") and therefore has no essential dignity (domicile, exaltation…) in the Hellenistic system — this is not an omission by the site, it is a historical fact: this system was built before its discovery.
Modern (20th-century) astrology conventionally assigns it co-rulership of Aquarius, a sign previously governed by Saturn alone — a widely shared convention, but postdating and distinct from classical dignities.