D defs.my
Entry 1 sense Webster, 1913

Diplex

· Di·plex · IPA
01 a. Pertaining to the sending of two messages in the same direction at the same time. Diplex and contraplex are the two varieties of duplex.
  1. 1.
    Pertaining to the sending of two messages in the same direction at the same time. Diplex and contraplex are the two varieties of duplex.(Teleg.)