si

name

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.”

2. (abbreviation, alt-of, initialism)Initialism of Smithsonian Institution.
3. (abbreviation, alt-of, initialism)Initialism 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.”

4. A diminutive of the male given name Simon.
5. A diminutive of the female given name Simone.
6. A diminutive of the male given name Silas.
7. A river in Shandong, China.
8. A county of Suzhou, Anhui, China.

   “Dong Xuefeng, head of the Huangwei Township Central School in Sixian County, Anhui province, told a school gathering on Monday that Christmas was a disgrace to the Chinese people because of past humiliations inflicted on the nation by mostly Christian invaders.”

   “Si county in Anhui province locked down its 760,000 residents and suspended public traffic as it reported 288 cases on Saturday.”

   “Most of Anhui’s cases were identified in Suzhou’s Si County, where on Wednesday the authorities ordered its 760,000 residents to refrain from going out unless it was necessary.”

9. (historical)Various prefectures of imperial China.
10. (alt-of, alternative)Alternative form of Xi.

noun

1. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of signal integrity.
2. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of systems integration.
3. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of self-injury.
4. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of suicidal ideation.
5. (abbreviation, alt-of, countable, initialism, slang, uncountable)Initialism of self-insertion (of the author into fan fiction).
6. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of spark ignition.
7. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of supporting information.
8. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of special intelligence.
9. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of systematic internaliser.
10. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of swarm intelligence.
11. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of synthetic intelligence.
12. (Philippines, abbreviation, alt-of, countable, initialism, uncountable)Initialism of sales invoice.
13. (Australia, Canada, UK, abbreviation, alt-of, countable, initialism, uncountable)Initialism 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. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of subinspector (of police, etc).

    “India's first transgender SI”

15. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of surface interval.
16. A syllable used in solfège to represent the seventh note of a major scale.

adj

1. (abbreviation, alt-of, initialism, not-comparable)Initialism of sacroiliac.

   “SI joint”