triplicate

/ˈtrɪplɪkɪt/
noun
  1. One of three identical copies, or a set of three copies.
    • She made the report in triplicate to ensure everyone had the information.
    • Please fill out the form in triplicate: one copy for you, one for the office, and one for the records.
    • The contract was signed in triplicate so each party could keep a copy.
Synonyms
adjective
  1. Consisting of or being one of three identical copies.
    • The triplicate forms must all be signed by the manager.
    • The triplicate receipts were filed in three different cabinets.
    • He kept a triplicate set of keys in case he lost the originals.
verb
  1. To make three copies of something.
    • The clerk triplicated the invoice for the accounting department.
    • We need to triplicate the application forms before the deadline.
    • Please triplicate this document and distribute it to the team.