second-generation
From Longman Business DictionaryRelated topics: Telephone, telegraphsecond-generationˌsecond-geneˈration adjective1a second-generation product, technology etc has been developed and improved since it was first producedSecond-generation technologies revolutionized 3D graphics and animation.2 abbreviation 2GTELECOMMUNICATIONS second-generation mobile phone networks without wires were the first to use digital technology