duplex apartment.

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.

Genetics . a double-stranded region of DNA.

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.

to make duplex; make or change into a duplex

Many owners are duplexing their old houses for extra income.

adjective

double , paired , twin , biform , binary , dual , duple , duplicate , geminate , twofold