SI

SI

1. The ISO 3166-1 two-letter (alpha-2) code for Slovenia.
2. The abbreviation for Système International d'Unités or the International System of Units, commonly known as the metric system.

   see Appendix on SI Units

SI

1. Initialism of Smithsonian Institution.

SI (uncountable)

1. (electronics) Initialism of signal integrity.
2. (technology) Initialism of systems integration.
3. Initialism of self-injury.
4. (fandom slang) Initialism of self-insertion. (of the author into fan fiction)
5. Initialism of supporting information.

SI (not comparable)

1. (anatomy, medicine) Initialism of sacroiliac.

   SI joint

• 'is, I's, IS, Is, i's, is, is-

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SI

1. Abbreviation of Système international. (Système international d'unités) (the international standard metric system)

• (Système International d'Unités): S.I., S. I.

From English SI, from French SI.

• (Tokyo) エスア​イ [èsúáꜜì] (Nakadaka – [3])
• IPA^(key): [e̞sɨᵝa̠i]

SI (katakana エスアイ, rōmaji esuai)

1. Synonym of 国際単位系 (Kokusai Tan'ikei, “International System of Units”); the SI

SI m

1. Abbreviation of Sinaloa. (Mexican state)