Word.ws English Dictionary

S.I.

S.I. proper noun: synonym of SI (International System of Units). Also the initialism of statutory instrument.

Proper noun

S.I.

  1. Synonym of SI (International System of Units)
    Synonyms:
    SI

Also used as

S.I. is also the initialism of statutory instrument.

Synonyms of S.I.

Forms of S.I.

alternative formSI
alternative formS. I.

Origin of S.I.

From French S.I..

Questions about S.I.

What does S.I. mean?
S.I. means synonym of SI (International System of Units).
What part of speech is S.I.?
S.I. is a proper noun.

Words near S.I. in the dictionary

  1. S.Dak.
  2. S.E.C.
  3. s.f.
  4. S.F.P.D.
  5. S.F.X.
  6. S.I.
  7. S.J.
  8. S.J.D.
  9. s.l.a.n.
  10. S.M.A.R.T.
  11. s.o.

Source and license

Adapted from Wiktionary: S.I. (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “S.I..” Word.ws, https://word.ws/s.i.. Based on Wiktionary, CC BY-SA 4.0.