Definitions for: Duplicate

[n] a copy that corresponds to an original exactly; "he made a duplicate for the files"
[n] something additional of the same kind; "he always carried extras in case of an emergency"
[adj] being two identical
[adj] identically copied from an original; "a duplicate key"
[v] increase twofold; "The population doubled within 50 years"
[v] make or do or perform again; "He could never replicate his brilliant performance of the magic trick"
[v] make a duplicate or duplicates of; "Could you please duplicate this letter for me?"
[v] duplicate or match; "The polished surface twinned his face and chest in reverse"

Webster (1913) Definition: Du"pli*cate, a. [L. duplicatus, p. p. of duplicare
to double, fr. duplex double, twofold. See Duplex.]
Double; twofold.

Duplicate proportion or 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.

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.

I send a duplicate both of it and my last dispatch.
-- Sir W.

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.

Du"pli*cate, v. t. [imp. & p. p. Duplicated; p.
pr. & vb. n. Duplicating.]
1. To double; to fold; to render double.

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

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

Synonyms: double, double, duplication, extra, matched, matching, parallel, reduplicate, repeat, replicate, same, twin, twin(a), twinned

See Also: agree, backup, check, computer backup, copy, copy, correspond, counterpart, double up, fit, geminate, geminate, gibe, jibe, manifold, match, match, mate, multiply, parlay, recapitulate, redouble, reproduce, similitude, stuff, sundries, sundry, tally, twin, whatchamacallit, whatsis

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