validationcode

noun
UK /ˌvælɪˈdeɪʃən kəʊd/
US /ˌvælɪˈdeɪʃən koʊd/

A special set of letters or numbers that proves something is real or correct.

Enter the validation code from your email to confirm your account.


OTHER MEANINGS

2. A short code used to check that data was entered correctly.

The form rejected my number because the validation code failed.

3. A code in a computer program that tests whether input is allowed.

The developer added a validation code to stop empty names from being saved.

4. A code printed on a ticket or coupon to prove it is genuine.

The website asked for the validation code on the back of the gift card.