Du"plex (?), a. [L., fr. duo two + plicare to fold. See Two, and Complex.]
Double; twofold.
Duplex escapement, a peculiar kind of watch escapement, in which the scape-wheel has two sets of teeth. See Escapement. --
Duplex lathe, one for turning off, screwing, and surfacing, by means of two cutting tools, on opposite sides of the piece operated upon. --
Duplex pumping engine, a steam pump in which two steam cylinders are placed side by side, one operating the valves of the other. --
Duplex querela [L., double complaint] (Eccl. Law), a complaint in the nature of an appeal from the ordinary to his immediate superior, as from a bishop to an archbishop. Mozley & W. --
Duplex telegraphy, a system of telegraphy for sending two messages over the same wire simultaneously. --
Duplex watch, one with a duplex escapement.
© Webster 1913
Du"plex (?), v. t. [See Duplex, a.] (Teleg.)
To arrange, as a telegraph line, so that two messages may be transmitted simultaneously; to equip with a duplex telegraphic outfit.
© Webster 1913