Noun
capital and largest city of Bulgaria located in western Bulgaria
Source: WordNetSerdica's citizens of Thracian descent were referred to as Illyrians probably because it was at some time the capital of Eastern Illyria (Second Illyria). citation For future emperors Serdica was their residence form where they ruled Rome. Source: Internet
Gilbert Dagron, Naissance d'une Capitale, 24 Among the various locations proposed for this alternative capital, Constantine appears to have toyed earlier with Serdica (present-day Sofia ), as he was reported saying that "Serdica is my Rome". Source: Internet