[ 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.

Nearby words

  1. triplegia,
  2. triplet,
  3. tripletail,
  4. tripleton,
  5. triplex,
  6. triplicity,
  7. triplite,
  8. triploblastic,
  9. triploid,
  10. triplopia


    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

Related formstrip·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. 2019

Examples 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 Formstriplication, 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

Word Origin and History for triplicate



early 15c., "triple, threefold," from Latin triplicatus, past participle of triplicare "to triple," from tri- "three" (see tri-) + plicare "to fold" see ply (v.1)). The verb meaning "to multiply by three" is recorded from 1620s.

Online Etymology Dictionary, © 2010 Douglas Harper