duplicate

Noun · Verb · Adjective
Synonyms: extraduplicationreduplicatedoublerepeatreplicatetwinparallelmatchingtwin(a)twinned

WordNet 3.0

Noun (2)

  1. something additional of the same kind“he always carried extras in case of an emergency”Synonyms: extra
  2. a copy that corresponds to an original exactly“he made a duplicate for the files”Synonyms: duplication

Verb (4)

  1. make or do or perform again“He could never replicate his brilliant performance of the magic trick”Synonyms: reduplicatedoublerepeatreplicate
  2. duplicate or match“The polished surface twinned his face and chest in reverse”Synonyms: twinparallel
  3. make a duplicate or duplicates of“Could you please duplicate this letter for me?”
  4. increase twofold“The population doubled within 50 years”Synonyms: double

Adjective (2)

  1. identically copied from an original“a duplicate key”
  2. being two identicalSynonyms: matchingtwin(a)twinned
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Webster's Dictionary (GCIDE)

Duplicate \Du"pli*cate\, n.

1.That which exactly resembles or corresponds to something else; another, correspondent to the first; hence, a copy; a transcript; a counterpart. [1913 Webster]

I send a duplicate both of it and my last dispatch.— Sir W. Temple.[1913 Webster]

2.(Law) An original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original. --Burrill. [1913 Webster]

Duplicate \Du"pli*cate\, v. t. [imp. & p. p. Duplicated; p. pr. & vb. n. Duplicating.]

1.To double; to fold; to render double. [1913 Webster]

2.To make a duplicate of (something); to make a copy or transcript of. --Glanvill. [1913 Webster]

3.(Biol.) To divide into two by natural growth or spontaneous action; as, infusoria duplicate themselves. [1913 Webster]

duplicate \du"pli*cate\, a. [L. duplicatus, p. p. of duplicare to double, fr. duplex double, twofold. See Duplex.] Double; twofold. [1913 Webster]

Duplicate proportion or Duplicate ratio (Math.), the proportion or ratio of squares. Thus, in geometrical proportion, the first term to the third is said to be in a duplicate ratio of the first to the second, or as its square is to the square of the second. Thus, in 2, 4, 8, 16, the ratio of 2 to 8 is a duplicate of that of 2 to 4, or as the square of 2 is to the square of 4. [1913 Webster]

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