duplex

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duplex

1. US and Canadian a duplex apartment or house
2. Chemistry a double-stranded region in a nucleic acid molecule
3. Machinery having pairs of components of independent but identical function
4. Electronics permitting the transmission of simultaneous signals in both directions in a radio, telecommunications, or computer channel
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Duplex

A house having a separate apartment for two families, especially a two-story house having two separate entrances and a complete apartment on each floor; an apartment with rooms on two connected floors.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

duplex

[′dü‚pleks]
(engineering)
Consisting of two parts working together or in a similar fashion.
(graphic arts)
The technique of recording on roll microfilm the front and back image of a document in a single exposure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

duplex

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

duplex

(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.

http://cit.ac.nz/smac/dc100www/dc_014.htm.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

duplex

Two way. See bidirectional, full-duplex and half-duplex.
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References in periodicals archive ?
We have recently demonstrated in collaboration with Anthony Pegg (Penn State University) for the first time that human alkyl guanine transferase can repair interstrand cross-linked DNA duplexes containing an alkyl linker of 7 methylene groups, whereas the protein is not able to repair a 4 carbon cross-link, and this work was recently published in the journal Biochemistry.
and private storage rooms for some of the ground-floor duplexes. The modernized building will be equipped with an elevator, state-of-the-art video intercom and smart wiring for high-speed Internet access in each residence.
Belying the 19th century exterior of 104 Wooster St., the duplexes are space-age modern, with 12.5-foot ceilings, wide-board white oak floors and lavish detailing, including massive pine girders and columns joined by iron straps, remnants of the building's past.
Prices range from $1,635 for studios to $6,500 for three-bedroom duplexes and are expected to average approximately $2,970 per home.
The Ludlow Street building boasts two apartments, both two-story duplexes, each with approximately 1,500 SF.
The Park West will consist of 172 residential units, many of them duplexes and triplexes with Hudson River and Riverside Park views.