The term serial number is often shortened to just S/N or SN, especially when the word precedes an actual serial number on something.
Rịba ama: Okwu okwu serial na-adịkarị mkpụmkpụ naanị S / N ma ọ bụ SN , karịsịa mgbe okwu ahụ na-ebute nọmba nọmba nsonye na ihe.