confirmationmark
nounUK /ˌkɒnfəˈmeɪʃən mɑːk/
US /ˌkɑːnfərˈmeɪʃən mɑːrk/
A small sign that shows something is true or has been checked.
The teacher put a confirmation mark next to each correct answer.
OTHER MEANINGS
2. A symbol added to a document to show it has been officially accepted.
The clerk placed a confirmation mark on the stamped form.
3. A digital icon that indicates a message or order has been received.
A green confirmation mark appeared beside the sent email.
4. A written or printed sign proving that a booking is valid.
The hotel emailed a confirmation mark on the reservation receipt.