Adjacent Words

Duplicate definitions

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Webster's 1828 Dictionary

DUPLICATE, a. [L., to double; twofold; to fold. See Double.] Double; twofold.
Duplicate proportion or ratio, is 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.
DUPLICATE, n.
1. Another corresponding to the first; or a second thing of the same kind.
2. A copy; a transcript. Thus a second letter or bill of exchange exactly like the first is called a duplicate.
DUPLICATE, v.t. [L.] To double; to fold.

WordNet (r) 3.0 (2005)

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

Merriam Webster's

I. adjective Etymology: Middle English, from Latin duplicatus, past participle of duplicare to double, from duplic-, duplex Date: 15th century 1. consisting of or existing in two corresponding or identical parts or examples <duplicate invoices> 2. being the same as another <duplicate copies> II. verb (-cated; -cating) Date: 15th century transitive verb 1. to make double or twofold 2. a. to make a copy of <a cell duplicates itself when it divides> b. to produce something equal to <trying to duplicate last year's success> c. to do over or again often needlessly <duplicated effort> intransitive verb to become duplicated; also repeat • duplicative adjective III. noun Date: 1532 1. a. either of two things exactly alike and usually produced at the same time or by the same process b. an additional copy of something (as a book or stamp) already in a collection 2. one that resembles or corresponds to another ; counterpart 3. two identical copies — used in the phrase in duplicate Synonyms: see reproduction

Oxford Reference Dictionary

adj., n., & v. --adj. 1 exactly like something already existing; copied (esp. in large numbers). 2 a having two corresponding parts. b existing in two examples; paired. c twice as large or many; doubled. --n. 1 a one of two identical things, esp. a copy of an original. b one of two or more specimens of a thing exactly or almost identical. 2 Law a second copy of a letter or document. 3 (in full duplicate bridge or whist) a form of bridge or whist in which the same hands are played successively by different players. 4 archaic a pawnbroker's ticket. --v.tr. 1 multiply by two; double. 2 a make or be an exact copy of. b make or supply copies of (duplicated the leaflet for distribution). 3 repeat (an action etc.), esp. unnecessarily. Phrases and idioms: duplicate ratio Math. the proportion of the squares of two numbers. in duplicate consisting of two exact copies. Derivatives: duplicable adj. duplication n. Etymology: L duplicatus past part. of duplicare (as DUPLEX)

Webster's 1913 Dictionary

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. 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. --Burrill.

Webster's 1913 Dictionary

Duplicate 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.

Webster's 1913 Dictionary

Duplicate 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.

Collin's Cobuild Dictionary

(duplicated) 1. If you duplicate something that has already been done, you repeat or copy it. His task will be to duplicate his success overseas here at home... = replicate VERB: V n • Duplicate is also a noun. Charles scored again, with an exact duplicate of his first goal. N-COUNT 2. To duplicate something which has been written, drawn, or recorded onto tape means to make exact copies of it. ...a business which duplicates video and cinema tapes for the movie makers. = copy VERB: V n • Duplicate is also a noun. I'm on my way to Switzerland, but I've lost my card. I've got to get a duplicate. N-COUNT: also in N 3. Duplicate is used to describe things that have been made as an exact copy of other things, usually in order to serve the same purpose. He let himself in with a duplicate key. ADJ: ADJ n 4. see also duplication

Soule's Dictionary of English Synonyms

I. a. Double, twofold. II. n. Copy, transcript, counterpart.

Moby Thesaurus

Doppelganger, Janus-like, Photostat, Xerox, Xerox copy, actual thing, alike, all one, all the same, ambidextrous, analogous, bifacial, bifold, biform, bilateral, binary, binate, biparous, bivalent, carbon, carbon copy, clone, come again, companion, comparable, conduplicate, conduplication, consubstantial, copy, copying, correspondent, corresponding, counterpart, dead ringer, disomatous, ditto, do a repeat, do again, do over, double, double-faced, doubling, dual, dupe, duple, duplex, duplication, echo, effigy, equal, equivalent, exact counterpart, exact likeness, exactly alike, facsimile, fellow, geminate, geminated, gemination, hectograph, homograph, homonym, homoousian, homophone, icon, idem, identic, identical, identical same, idol, image, imitate, imitation, indistinguishable, ingeminate, ingemination, iteration, just alike, like, likeness, living image, living picture, make over, manifold, match, matching, mate, microcopy, microfilm, mimeo, mimeograph, miniature, mirroring, model, multigraph, multiply by two, no other, none other, of a kind, of a piece, of a size, one, parallel, paralleling, parrot, photocopy, photograph, picture, plagiarize, portrait, quadruplicate, quote, re-create, re-form, rebuild, reconstitute, reconstruct, redesign, redo, redouble, reduplicate, reduplication, reecho, reestablish, refashion, reflection, refound, regenerate, regurgitate, reincarnate, reinstitute, reissue, reiteration, remake, renew, renovate, reorganize, repeat, repetition, replica, replicate, replication, representation, reprint, reproduce, reproduction, resemblance, reshape, restore, restructure, resurrect, revise, revive, rubbing, same, say again, second, secondary, selfsame, semblance, shadow, similitude, simulacrum, spit and image, spitting image, stat, synonym, tantamount, the same, the same difference, trace, tracing, transcribe, triplicate, twin, twinned, twinning, two-faced, two-level, two-ply, two-sided, two-story, twofold, undifferent, very image, very picture, very same, without difference, without distinction