[{"Bold_text": "noun", "List Items": ["Electricity.a material of such low conductivity that the flow of current through it is negligible. insulating , often glass or porcelain, in a unit form designed so as to support a charged conductor and electrically isolate it.", "a material of such low conductivity that the flow of current through it is negligible.", "insulating , often glass or porcelain, in a unit form designed so as to support a charged conductor and electrically isolate it.", "a person or thing that insulates."]}]