The Open Dictionary

Social Insurance Number

noun

UK/ˌsəʊ.ʃᵊl ɪnˈʃɔː.rəns ˌnʌm.bəʳ/
US/ˌsoʊ.ʃᵊl ɪnˈʃɔːr.ᵊns ˌnʌm.bɚ/

Definitions of Social Insurance Number noun

  1. Countable

    In Canada, a unique number assigned to each citizen by the federal government, used for accessing government services and tax purposes.

    • You usually need to provide your Social Insurance Number when applying for a job.

    • I need to update my Social Insurance Number because I recently moved.

    • Please keep your Social Insurance Number secure to prevent identity theft.