[{"Bold_text": "noun", "List Items": ["duplex apartment duplex apartment.", "duplex house duplex house.", "paper or cardboard having different colors, finishes, or stocks on opposite sides.", "Printing.a method of reproducing an illustration using two halftone plates, one black and the other in a color.a printing press equipped to print both sides of a sheet in one pass.", "a method of reproducing an illustration using two halftone plates, one black and the other in a color.", "a printing press equipped to print both sides of a sheet in one pass.", "Genetics.a double-stranded region of DNA."]}, {"Bold_text": "adjective", "List Items": ["having two parts; double; twofold.", "(of a machine) having two identical working units, operating together or independently, in a single framework or assembly.", "pertaining to or noting a telecommunications system, as most telephone systems, permitting the simultaneous transmission of two messages in opposite directions over one channel."]}, {"Bold_text": "verb (used with object)", "List Items": ["to make duplex; make or change into a duplex:Many owners are duplexing their old houses for extra income."]}]