JugurthaPronunciation: /dʒəˈgəːθə/Definition of Jugurtha (d.104 bc), joint king of Numidia circa 118–104. His attacks on his royal partners prompted intervention by Rome and led to the outbreak of the Jugurthine War (112–105). He was eventually captured by the Roman general Marius and executed in Rome. Derivatives JugurthinePronunciation: /-θʌɪn/ adjective Jugurtha in other Oxford dictionaries Definition of Jugurtha in the US English dictionary