SI

See also: Appendix:Variations of "si"

Translingual

Symbol

SI

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

   see Appendix on SI Units

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English

Proper noun

SI

1. Initialism of Smithsonian Institution.

Noun

SI (countable and uncountable, plural SIs)

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. (mechanical engineering) Initialism of spark ignition.
6. Initialism of supporting information.
7. Initialism of special intelligence.
8. (finance) Initialism of systematic internaliser.
9. Initialism of swarm intelligence.

Adjective

SI (not comparable)

1. (anatomy, medicine) Initialism of sacroiliac.

   SI joint

Anagrams

• 'is, I's, IS, Is, i's, is, is-, is.

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French

Pronunciation

• IPA^(key): /ɛ.si/

• Audio

  (file)

Proper noun

SI ?

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

Alternative forms

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

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Japanese

Etymology

From English SI, from French SI.

Pronunciation

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

Noun

S(エス)I(アイ) • (esuai) 

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

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Spanish

Proper noun

SI m

1. Abbreviation of Sinaloa. (Mexican state)