duplex

US /ˈduː.pleks/
UK /ˈduː.pleks/
"duplex" picture
1.

a house or building divided into two apartments, with a separate entrance for each.

:
They bought a duplex with the intention of renting out one of the units.
Living in a duplex offers more space than an apartment.
2.

a system of telecommunications allowing simultaneous two-way transmission of data.

:
The new communication system uses a duplex mode for efficient data transfer.
Full duplex allows both parties to speak and listen simultaneously.
1.

having two parts or elements.

:
The printer has a duplex function, allowing it to print on both sides of the paper.
A duplex fiber optic cable can transmit and receive data simultaneously.