Phrase guide

social insurance number

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

A nine-digit number issued by the government of Canada to citizens, permanent residents, and some categories of temporary residents, for official identification in the provision of government services and income taxation.

Definition source: English Wiktionary via Wiktextract

Usage: Canada

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: SIN

Antonyms: none provided

Broader terms: number, identifier

History

Etymology

No etymology was provided for this word.

Across languages

Translations

3 source translations are retained for this English entry.

  • French: numéro d'assurance sociale — Translations
  • French: NAS — Translations
  • Polish: numer ubezpieczenia społecznego — Translations