Duplexing

[doo-pleks, dyoo-] /ˈdu plɛks, ˈdyu-/

noun
1.
.
2.
.
3.
paper or cardboard having different colors, finishes, or stocks on opposite sides.
4.
Printing.

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.
/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
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.