[ noun, adjective kwo-droo-pli-kit; verb kwo-droo-pli-keyt ]
/ noun, adjective kwɒˈdru plɪ kɪt; verb kwɒˈdru plɪˌkeɪt /


one of four copies or identical items, especially copies of typewritten material.


consisting of four identical parts.
pertaining to a fourth item or copy of something.

verb (used with object), quad·ru·pli·cat·ed, quad·ru·pli·cat·ing.

to produce or copy in quadruplicate.
to make four times as great.


    in quadruplicate, in four identical copies.

Origin of quadruplicate

1650–60; < Latin quadruplicātus (past participle of quadruplicāre), equivalent to quadruplic- (stem of quadruplex quadruplex) + -ātus -ate1
Related formsquad·ru·pli·ca·tion, quad·ru·pli·ca·ture [kwo-droo-pli-kuh-cher] /kwɒˈdru plɪ kə tʃər/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for quadruplication


adjective (kwɒˈdruːplɪkɪt, -ˌkeɪt)

fourfold or quadruple

verb (kwɒˈdruːplɪˌkeɪt)

to multiply or be multiplied by four

noun (kwɒˈdruːplɪkɪt, -ˌkeɪt)

a group or set of four things
Derived Formsquadruplication, noun

Word Origin for quadruplicate

C17: from Latin quadruplicāre to increase fourfold
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012