SI

proper noun

1. 1

   International System of Units

   The reason for the change to the International System of Measurement (SI) units was that over time the prototype lost atoms and therefore mass because it is “susceptible to damage and environmental factors,” according to the National Physical Laboratory (NPL), which houses Kilo 18, Britain’s copy of Le Grand K.

proper noun

1. 1

   Variant of Smithsonian InstitutionInitialism of Smithsonian Institution.

2. 2

   Variant of Sports IllustratedInitialism of Sports Illustrated.

   “We have said from the start that our top priorities are to keep Sports Illustrated alive, uphold the legacy of the institution and protect our union jobs. We look forward to discussing a future with Minute Media that does that,” Emma Baccellieri, staff writer for SI and vice chair for the SI Union, said in a statement.

noun

1. 1

   Variant of signal integrityInitialism of signal integrity.

2. 2

   Variant of systems integrationInitialism of systems integration.

3. 3

   Variant of self-injuryInitialism of self-injury.

4. 4

   Variant of suicidal ideationInitialism of suicidal ideation.

5. 5

   Variant of self-insertionslangInitialism of self-insertion (of the author into fan fiction).

6. 6

   Variant of spark ignitionInitialism of spark ignition.

7. 7

   Variant of supporting informationInitialism of supporting information.

8. 8

   Variant of special intelligenceInitialism of special intelligence.

9. 9

   Variant of systematic internaliserInitialism of systematic internaliser.

10. 10

    Variant of swarm intelligenceInitialism of swarm intelligence.

11. 11

    Variant of synthetic intelligenceInitialism of synthetic intelligence.

12. 12

    Variant of sales invoiceInitialism of sales invoice.

13. 13

    Variant of statutory instrumentInitialism of statutory instrument.

    The scope of SIs varies greatly, from the technical (e.g. to set or vary the dates on which different provisions of an Act will come into force, to change the levels of fines or penalties for offences or to make consequential and transitional provisions) to the much wider-ranging, such as filling out the broad provisions in Acts.

14. 14

    Variant of subinspectorInitialism of subinspector (of police, etc).

    India's first transgender SI

15. 15

    Variant of surface intervalInitialism of surface interval.

adjective

1. 1

   Variant of sacroiliacInitialism of sacroiliac.

   SI joint

Forms

plural

SIs