• synonyms


[noun, adjective kwo-droo-pli-kit; verb kwo-droo-pli-keyt]
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  1. one of four copies or identical items, especially copies of typewritten material.
  1. consisting of four identical parts.
  2. pertaining to a fourth item or copy of something.
verb (used with object), quad·ru·pli·cat·ed, quad·ru·pli·cat·ing.
  1. to produce or copy in quadruplicate.
  2. to make four times as great.
  1. in quadruplicate, in four identical copies.

Origin of quadruplicate

1650–60; < Latin quadruplicātus (past participle of quadruplicāre), equivalent to quadruplic- (stem of quadruplex quadruplex) + -ātus -ate1
Related formsquad·ru·pli·ca·tion, quad·ru·pli·ca·ture [kwo-droo-pli-kuh-cher] /kwɒˈdru plɪ kə tʃər/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for quadruplicate

Historical Examples

  • There was the matter of the wedding, which was now to be in quadruplicate.

    Masters of Space

    Edward Elmer Smith

  • We must not, however, fall into his own mistake and quadruplicate to his duply.

    Matthew Arnold

    George Saintsbury

  • The order received by mail is written up and invoiced in quadruplicate on a snap-out form.

    Warren Commission (7 of 26): Hearings Vol. VII (of 15)

    The President's Commission on the Assassination of President Kennedy

  • Army accounting is wholly unlike civilian, books being dispensed with and accounts of all kinds being made in quadruplicate.

  • Most common is the "quadruplicate" arrangement, with four sets of laminae of differing depths.

British Dictionary definitions for quadruplicate


adjective (kwɒˈdruːplɪkɪt, -ˌkeɪt)
  1. fourfold or quadruple
verb (kwɒˈdruːplɪˌkeɪt)
  1. to multiply or be multiplied by four
noun (kwɒˈdruːplɪkɪt, -ˌkeɪt)
  1. a group or set of four things
Derived Formsquadruplication, noun

Word Origin

C17: from Latin quadruplicāre to increase fourfold
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for quadruplicate


1650s, from Latin quadruplicatus, past participle of quadruplicare "make fourfold," from quadri- "four" (see quadri-) + plicare "to fold" (see ply (v.1)).


1660s, from Latin quadruplicatus, past participle of quadruplicare "make fourfold," from quadri- "four" (see quadri-) + plicare "to fold" (see ply (v.1)). Related: Quadruplicated; quadruplicating.

Online Etymology Dictionary, © 2010 Douglas Harper

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