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  1. du·pli·cate
  2. adjective

    • 1. exactly like something else, especially through having been copied:

      a duplicate license is issued to replace a valid license which has been lost
    • 2. having two corresponding or identical parts:

      a duplicate application form

    noun

    • 1. one of two or more identical things:

      books may be disposed of if they are duplicates
    • 2. a copy of an original:

      locksmiths can make duplicates of most keys
    • 3. short for duplicate bridge

    • 4. a pawnbroker's ticket.

    verb

    • 1. make or be an exact copy of:

      they have not been able to duplicate his successes a unique scent, impossible to duplicate or forget
      Synonym : copy, photocopy, photostat, xerox, mimeograph, make a photocopy of, take a photocopy of, make a carbon copy of, make a carbon of, make a facsimile of, reproduce, replicate, reprint, run off, repeat, do over again, do again, redo, perform again, replicate
    • 2. make or supply copies of (a document):

      information sheets had to be typed and duplicated a duplicating machine
    • 3. multiply by two; double:

      the normal amount of DNA has been duplicated thousands of times
    • 4. do (something) again unnecessarily:

      most of these proposals duplicated work already done
  3. Variation

    • n.: noun: duplicate, plural noun: duplicates

    • adjective

      exactly like something else, especially through having been copied:

      having two corresponding or identical parts.

    • noun

      one of two or more identical things:

      a copy of an original:

    • verb

      make or be an exact copy of:

      multiply by two; double:

    • consisting of two exact copies
    • noun

      a competitive form of bridge in which the same hands are played successively by different partnerships.
    • noun

      a competitive form of bridge in which the same hands are played successively by different partnerships.
    • twice in exactly the same way
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