Part of speech: adjective

Having two parts; twofold; also, working in two ways or directions.

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Usage examples "duplex":

  1. April 23, 1873 162, 633 Duplex Telegraphs. - "Edison, His Life and Inventions", Frank Lewis Dyer and Thomas Commerford Martin.
  2. Unless you like it here in this- this make- believe, double- barrelled, duplex do- funny of a studio thing. - "Half Portions", Edna Ferber.
  3. On viewing together the system of vessels proper to each heart, they will be seen to exhibit in respect to the body a figure in doubly symmetrical arrangement, of which the united hearts form a duplex centre. - "Surgical Anatomy", Joseph Maclise.