[ noun, adjective trip-li-kit, -keyt; verb trip-li-keyt ]
/ noun, adjective ˈtrɪp lɪ kɪt, -ˌkeɪt; verb ˈtrɪp lɪˌkeɪt /


one of three identical items, especially copies of typewritten material.

verb (used with object), trip·li·cat·ed, trip·li·cat·ing.

to make threefold; triple.
to make in triplicate: to triplicate a report before releasing it.


produced in or consisting of three copies or parts; threefold; triple: triplicate contracts.


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Idioms for triplicate

    in triplicate,
    1. in three identical copies: This letter should be done in triplicate.
    2. threefold: That goes for me, too, in triplicate.

Origin of triplicate

1400–50; late Middle English (adj.) < Latin triplicātus (past participle of triplicāre to triple), equivalent to triplic- (stem of triplex) triplex + -ātus -ate1


trip·li·ca·tion, nounsub·trip·li·cate, adjectivesub·trip·li·cat·ed, adjectivesub·trip·li·ca·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for triplicate

British Dictionary definitions for triplicate


adjective (ˈtrɪplɪkɪt)


verb (ˈtrɪplɪˌkeɪt)

to multiply or be multiplied by three

noun (ˈtrɪplɪkɪt)

  1. a group of three things
  2. one of such a group
in triplicate written out three times

Derived forms of triplicate

triplication, noun

Word Origin for triplicate

C15: from Latin triplicāre to triple, from triplex
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