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.


© Webster 1913.

Du"pli*cate, n.


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. Temple.

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.



© Webster 1913.

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


To double; to fold; to render double.


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


3. Biol.

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


© Webster 1913.

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