personal identification number

IPA/ˌpɜː.sən.əl aɪ.den.tɪ.fɪˈkeɪ.ʃən ˌnʌm.bər/
IPA/ˌpɝː.sən.əl aɪ.den.t̬ə.fɪˈkeɪ.ʃən ˌnʌm.bɚ/

personal identification number — noun

1. a secret set of numbers that proves your identity when you use a bank card, mobi

1.名詞B1
釋義

a secret set of numbers that proves your identity when you use a bank card, mobile phone, or electronic account to take out money or make payments

例句

Yasmin typed her personal identification number into the cash machine to get money.

The bank clerk reminded Linh to keep her personal identification number safe at all times.

collocation: keep + [number] + safe

同義詞
  • PIN

    the short, everyday form used in almost all situations, both casual and formal

  • PIN number

    a common spoken form that adds 'number' after the initialism for extra clarity, though technically redundant

用法筆記

The full phrase is formal; in everyday speech, people almost always say PIN or PIN number instead.

常見錯誤

❌I forgot my personal identification number password.
✅I forgot my personal identification number.
💡The phrase already contains 'number', so adding 'password' is redundant.
❌I entered my personal identification number to log in to my email.
✅I entered my personal identification number to use the ATM.
💡A personal identification number is used for bank or device access, not for general online accounts.