Meaning : A house with two units sharing a common wall.
Synonyms : duplex house, semidetached house
Meaning : An apartment having rooms on two floors that are connected by a staircase.
Synonyms : duplex apartment
Meaning : (used technically of a device or process) having two parts.
Example :
A duplex transaction.
Meaning : Allowing communication in opposite directions simultaneously.
Example :
Duplex system.
Duplex telephony.