• WordNet 3.6
    • adj duplex allowing communication in opposite directions simultaneously "duplex system","duplex telephony"
    • adj duplex (used technically of a device or process) having two parts "a duplex transaction"
    • v duplex change into a duplex
    • n duplex an apartment having rooms on two floors that are connected by a staircase
    • n duplex a house with two units sharing a common wall
    • ***
Webster's Revised Unabridged Dictionary
    • Duplex Double; twofold.
    • Duplex (Computers) organized so that data may be transmitted in two opposite directions over the same channel; -- of communications channels, such as data transfer lines between computers.
    • v. t Duplex (Teleg) To arrange, as a telegraph line, so that two messages may be transmitted simultaneously; to equip with a duplex telegraphic outfit.
    • ***
Century Dictionary and Cyclopedia
    • duplex Double; twofold. Specifically applied in electricity to a system of telegraphy in which two messages are transmitted at the same time over a single wire: it includes both diplex and contraplex. See these words.
    • n duplex A doubling or duplicating.
    • duplex In telegraphy, to arrange (a wire) so that two messages may be transmitted along it at the same time.
    • duplex To transmit telegraphic messages by the duplex system.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Duplex dū′pleks twofold: double
    • n Duplex another thing of the same kind: a copy or transcript
    • v.t Duplex to double: to fold
    • ***


  • Richard Dreyfuss
    Richard Dreyfuss
    “My worst fear is that I'll end up living in some run-down duplex on Wilshire wearing pants hiked up to my nipples and muttering under my breath.”


Webster's Revised Unabridged Dictionary
L., fr. duo, two + plicare, to fold. See Two, and Complex


In literature:

Later, the tail was shaped like a scimitar, and later again, it assumed a duplex form.
"The Astronomy of the Bible" by E. Walter Maunder
Duplex pump operated directly by steam 180 50.
"Rural Hygiene" by Henry N. Ogden
The local authorities have, with great good sense, written the duplex name of this church in clear letters over the chief entrance.
"Old and New London" by Walter Thornbury
I pocketed the famous duplex pistol already mentioned.
"Eyes Like the Sea" by Mór Jókai
But say, you oughta see the new tubular duplex they're gettin' out!
"Thirty" by Howard Vincent O'Brien
The duplex shutter is craftier than the criminal.
"A Republic Without a President and Other Stories" by Herbert Ward
It's the camera that has duplex action.
"The Bread Line" by Albert Bigelow Paine
Matters wore a rather serious aspect at Duplex Street; for a whole month Jared had been enjoying all the sensations known only to the wealthy.
"A Little World" by George Manville Fenn
In duplex telegraphy we use what is called a differential magnet.
"Electricity and Magnetism" by Elisha Gray
A duplex again may be either of the first class or of the second, or a major or a minor.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2" by Various
On the other hand, the "banded duplex spiral" (~30~) is common in the thumb, but rare elsewhere.
"Finger Prints" by Francis Galton
Most of the larger companies load with the Duplex loader and use tongs.
"Motor Truck Logging Methods" by Frederick Malcolm Knapp
To make one wire do the work of two was accomplished by the invention of the duplex system.
"The Story of Great Inventions" by Elmer Ellsworth Burns
Hence two brown-eyed parents, if P is duplex in both (or duplex in one and simplex in the other) can have only brown-eyed children.
"Being Well-Born" by Michael F. Guyer
Weekly envelopes, in single or duplex form, are used in twenty-four churches.
"The Church on the Changing Frontier" by Helen O. Belknap
The lens was equipped with a Prosch duplex shutter, which was, I found, even when set for its lowest speed, too rapid for my purpose.
"American Big-Game Hunting" by Various
With duplex engines and a double crew, (It's "manned" by mermaids when it's hid from view).
"The Bee's Bayonet" by Edwin Alfred Watrous
Its place was taken by slower but preferable systems: those of duplex and multiplex telegraphy.
"The Romance of Modern Invention" by Archibald Williams
Bagsby, who was in the conspiracy to the extent of five pounds, took me over alone and lighted the duplex lamp.
"Affinities and Other Stories" by Mary Roberts Rinehard
Duplex burners are also used.
"Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6" by Various

In news:

People on both sides of a duplex in DeWitt Township escaped a fire Monday night.
Fire in Amarillo destroys duplex .
He wants to sell the duplexes to senior citizens.
Fire destroys Washington St duplex .
The owner of this duplex penthouse in Hong Kong describes it as an ' eagle 's nest' because of its views overlooking the bustling city.
DUPLEXS FOR RENT Nice two bedroom, with appliances, No pets, No smoking.
Two families were going to be evicted on Oct 29 from their Franklinton duplex.
A 64-year-old man has died in an explosion and fire at a St Joseph duplex.
When Agence Andrée Putman designs a duplex for a Brussels heiress, it's clear that women rule.
The three people inside the duplex were able to get out safely.
Peek inside Frank Sinatra 's NY Duplex set to list for $7.7 million.
Five more low- and moderate-income duplexes are planned for Morganfield with funding being provided by the Kentucky Housing Corp.
The larger-than-life SoHo duplex of a hotelier and fixture on the party circuit.
Inside the late artist Gray Foy's magical duplex apartment.
EVANSVILLE — On the evening of July 10, as Jonathan Long watched television at his home on Indiana Street, he had no idea his duplex neighbor of only a week was about to start a fire cooking a batch of meth.

In science:

In other words, it is posited that the replication loops remain simple in their topology so that the topoisomerase can act to promote the formation of the replication loops, and these loops once formed do not hinder the separation of the newly born duplexes.
Then Topo II has a smaller job of finishing the separation of the newly formed duplexes.
Once the strands are separated, the environment of the cell can provide each with complementary bases to form the base pairs of new duplex DNA’s.
Because of the latter assumptions, we can deal with either full duplex or half duplex transmission at the relays with minor modifications, as explained below.
Capacity of Linear Two-hop Mesh Networks with Rate Splitting, Decode-and-forward Relaying and Cooperation
Moreover, for the same reason, the full-duplex coding schemes considered in this paper can be easily adapted to half-duplex RSs by simply alternating transmission from MT or RS in each block.
Capacity of Linear Two-hop Mesh Networks with Rate Splitting, Decode-and-forward Relaying and Cooperation
In the case of half-duplex then, since the MTs transmit new information only once every two blocks, the corresponding achievable rates are easily seen to be just half of the corresponding rates with full duplex derived here1 .
Capacity of Linear Two-hop Mesh Networks with Rate Splitting, Decode-and-forward Relaying and Cooperation
Strictly speaking, under average power constraint, the power used with half-duplex by both sources and relays can be doubled with respect to the full-duplex case.
Capacity of Linear Two-hop Mesh Networks with Rate Splitting, Decode-and-forward Relaying and Cooperation
Shamai, “Cellula r systems with full-duplex Amplify-and-Forward relaying and cooperative base stations,” in Proc.
Capacity of Linear Two-hop Mesh Networks with Rate Splitting, Decode-and-forward Relaying and Cooperation
Considered terminals are half-duplex; they cannot receive and transmit at the same time.
Incomplete decode-and-forward protocol using distributed space-time block codes
The reversible chemical reaction by which target molecules in solution bind to probes attached to the microarray surface to form duplexes.
Physico-chemical modelling of target depletion during hybridisation on oligonulceotide microarrays
In general, an agent is allowed to be a duplex operator, that is to be both a transmitter and a receiver, which can act as a relay in a network.
Interference Mitigation in Large Random Wireless Networks
Degrees of freedom of wireless networks with relays, feedback, cooperation, and full duplex operation.
Interference Mitigation in Large Random Wireless Networks
Each of the sets C(ik ) is isomorphic to the field of complex numbers, while D is the set of so-called hyperbolic numbers, also called duplex numbers (see, e.g. , ).
Bicomplex Riesz-Fischer Theorem
End-to-end stacking and liquid crystal condensation of 6 to 20 base pair DNA duplexes.
Field-control, phase-transitions, and life's emergence
For example, the equivalent statistical length for polyethylene is about 3.5 monomers, and for duplex DNA, about 5000 base pairs. A randomly closed chain of length N is a random piecewise linear embedding of S1 , with all the 1-simplexes of the same length.
Problems from Topology Proceedings