instantconfirmationcode
nounUK /ˈɪnstənt ˌkɒnfəˈmeɪʃən kəʊd/
US /ˈɪnstənt ˌkɑːnfərˈmeɪʃən koʊd/
A special set of letters or numbers that shows right away that something is true or done.
After I bought the ticket online, I got an instant confirmation code in my email.
OTHER MEANINGS
2. A short code sent to prove a purchase or booking was accepted without delay.
The hotel sent an instant confirmation code so we knew our room was booked.
3. A digital password-like code that approves an action immediately.
Enter the instant confirmation code to finish setting up your account.
4. A code that proves a message or order was received at once.
The app showed an instant confirmation code after I placed the order.