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6 definitions found
 for duplex
From The Collaborative International Dictionary of English v.0.48 :

  Duplex \Du"plex\, a. [L., fr. duo two + plicare to fold. See
     Two, and Complex.]
     1. Double; twofold.
        [1913 Webster]
  
     2. (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.
        [PJC]
  
     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 [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.
  
     half duplex (Computers)
        (a) arranged so that the information may be transmitted in
            both directions, but only in one direction at a time;
            -- of communications channels between computers;
            contrasted with full duplex(a).
        (b) arranged so that the information transmitted to the
            remote computer also appears on the local terminal; --
            of communications channels between computers;
            contrasted with full duplex(b).
  
     full duplex, (Computers)
        (a) arranged so that the information may be transmitted in
            both directions simultaneously; -- of communications
            channels between computers; contrasted with half
            duplex(a).
        (b) arranged so that the information transmitted to the
            remote computer does not appear on the local terminal;
            -- of communications channels between computers;
            contrasted with half duplex(b).
            [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Duplex \Du"plex\, v. t. [See Duplex, a.] (Teleg.)
     To arrange, as a telegraph line, so that two messages may be
     transmitted simultaneously; to equip with a duplex
     telegraphic outfit.
     [Webster 1913 Suppl.]

From The Collaborative International Dictionary of English v.0.48 :

  duplex \du"plex\, n. [See Duplex, a.]
     1. something which is duplex; -- used mostly in reference to
        a living unit, such as an apartment, in a building having
        two similar living units.
        [PJC]
  
     2. (Biology, Genetics) a double-stranded region in a nucleic
        acid molecule. See deoxyribonucleic acid.
        [PJC]

From WordNet (r) 3.0 (2006) :

  duplex
      adj 1: (used technically of a device or process) having two
             parts; "a duplex transaction"
      2: allowing communication in opposite directions simultaneously;
         "duplex system"; "duplex telephony"
      n 1: a house with two units sharing a common wall [syn: duplex
           house, duplex, semidetached house]
      2: an apartment having rooms on two floors that are connected by
         a staircase [syn: duplex apartment, duplex]
      v 1: change into a duplex

From Moby Thesaurus II by Grady Ward, 1.0 :

  49 Moby Thesaurus words for "duplex":
     Janus-like, ambidextrous, apartment house, bifacial, bifold,
     biform, bifurcated, bilateral, binary, binate, biparous,
     bipartisan, bipartite, bivalent, condominium, conduplicate,
     cooperative apartment house, dichotomous, disomatous, double,
     double-barreled, double-faced, duadic, dual, dualistic, duple,
     duplex house, duplicate, duplicated, dyadic, flats, geminate,
     geminated, high-rise apartment building, identical, matched,
     second, secondary, tenement, twain, twin, twinned, two, two-faced,
     two-level, two-ply, two-sided, two-story, twofold
  
  

From The Free On-line Dictionary of Computing (30 December 2018) :

  duplex
  
      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)">(http://cit.ac.nz/smac/dc100www/dc_014.htm).
  
     (2001-07-21)
  

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