quadruplex adjective & verb.
['kwɒdrʊplɛks] L19.[Latin = fourfold, formed as QUADRU- + -PLEX1.]Telephony.
A. adjective. Of a system etc.: such that four messages can be sent over one wire at the same time.
L19.b. verb trans. Make (a circuit etc.) quadruplex.
L19. [TahlilGaran] English Dictionary ▲