paper or cardboard having different colors, finishes, or stocks on opposite sides.
4.
Printing.
a method of reproducing an illustration using two halftone plates, one black and the other in a color.
a printing press equipped to print both sides of a sheet in one pass.
5.
Genetics. a double-stranded region of DNA.
adjective
6.
having two parts; double; twofold.
7.
(of a machine) having two identical working units, operating together or independently, in a single framework or assembly.
8.
pertaining to or noting a telecommunications system, as most telephone systems, permitting the simultaneous transmission of two messages in opposite directions over one channel.
verb (used with object)
9.
to make duplex; make or change into a duplex:
Many owners are duplexing their old houses for extra income.
Origin
1810-20; < Latin: twofold, double, equivalent to du(o) two + -plex-plex
Related forms
duplexity, noun
Examples from the web for duplex
Carotid duplex is an ultrasound test that shows how well blood is flowing through the carotid arteries.
So a better option is duplex printing: printing at full size, on both sides of each sheet.
We went to his home, half a duplex of company housing, within earshot of the howling well fires.
Then came duplex penthouses, which meant there could be more apartments with a link to the top.
There's privacy here in the nooks and crannies of the duplex interior.
The owner duplex is located on the second and third floor.
British Dictionary definitions for duplex
duplex
/ˈdjuːplɛks/
noun
1.
(US & Canadian) a duplex apartment or house
2.
a double-stranded region in a nucleic acid molecule
adjective
3.
having two parts
4.
(machinery) having pairs of components of independent but identical function
5.
permitting the transmission of simultaneous signals in both directions in a radio, telecommunications, or computer channel
Derived Forms
duplexity, noun
Word Origin
C19: from Latin: twofold, from duo two + -plex-fold
Word Origin and History for duplex
adj.
1817, "composed of two parts," from Latin duplex, from duo "two" (see two) + -plex, from Greek plax (genitive plakos) "flat surface." The noun sense of "house for two families; two-story apartment" is American English, 1922.
duplex in Technology
communications Used to describe a communications channel that can carry signals in both directions, in contrast to a simplex channel which only ever carries a signal in one direction. If signals can only flow in one direction at a time the communications is "half-duplex", like a single-lane road with traffic lights at each end. Walkie-talkies with a "press-to-talk" button provide half-duplex communications. If signals can flow in both directions simultaneously the communications is "full-duplex", like a normal two-lane road. Telephones provide full-duplex communications. The term "duplex" was first used in wireless, telegraph, and telephone communications. Nearly all communications circuits used by computers are two-way, so the term is seldom used. (https://cit.ac.nz/smac/dc100www/dc_014.htm). (2001-07-21)