seropositivePronunciation: /ˌsɪərəʊˈpɒzɪtɪv/Translate seropositive | into Italian Definition of seropositive adjective Medicine giving a positive result in a test of blood serum, e.g. for the presence of a virus: two of the patients were seropositive for HIVDerivatives seropositivity noun seropositive in other Oxford dictionaries Definition of seropositive in the US English dictionary