As a Noun: 1. A SCAN is a medical test in which a machine sends a beam of X-rays over a part of your body in order to check that it is healthy. Note: 1. There appears to be no commonly used Auslan sign for SCAN. If you know a sign for SCAN used by you or other Auslan users (deaf people or interpreters) please go to "report missing sign" and supply details. Thank you.