triplicate
/ˈtrɪpɪleɪt/Definitions
1. noun
A copy of a document or record made for safety or verification.
“The company kept a triplicate copy of the contract for future reference.”
2. verb
To make or produce a copy of a document or record, typically for safety or verification.
“The clerk was instructed to triplicate the agreement before sending it to the client.”
3. adjective
Consisting of three identical or similar things; made in triplicate.
“The triplicate forms were used for both electronic and printed reports.”