DUPLEX
Du"plex, a. Etym: [L., fr. duo two + plicare to fold. See Two, and
Complex.]
Defn: 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 Etym: [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.
DUPLICATE Du"pli*cate, a. Etym: [L. duplicatus, p. p. of duplicare to double, fr. duplex double, twofold. See Duplex.]
Defn: Double; twofold. Duplicate proportion or ratio (Math.), the proportion or ratio of squares. Thus, in geometrical proportion, the first term to the third is said to be in a duplicate ratio of the first to the second, or as its square is to the square of the second. Thus, in 2, 4, 8, 16, the ratio of 2 to 8 is a duplicate of that of 2 to 4, or as the square of 2 is to the square of 4.
DUPLICATE
Du"pli*cate, n.
1. That which exactly resembles or corresponds to something else; another, correspondent to the first; hence, a copy; a transcript; a counterpart. I send a duplicate both of it and my last dispatch. Sir W. Temple.
2. (Law)
Defn: An original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original. Burrill.
DUPLICATE
Du"pli*cate, v. t. [imp. & p. p. Duplicated; p. pr. & vb. n.
Duplicating.]
1. To double; to fold; to render double.