SI

proper noun

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

proper noun

1. abbreviation, initialism Initialism of Smithsonian Institution.Smithsonian Institution
2. abbreviation, initialism Initialism of Sports Illustrated.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,

noun SIs · S.I.

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

adjective

1. abbreviation, initialism, not comparable Initialism of sacroiliac.sacroiliac SI joint

noun sis · ti

1. A syllable used in solfège to represent the seventh note of a major scale.

proper noun Sy

1. A diminutive of the male given name Simon.
2. A diminutive of the female given name Simone.
3. A diminutive of the male given name Silas.

proper noun Su · Ssu · Szu

1. A river in Shandong, China.
2. 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.
3. historical Various prefectures of imperial China.
4. historical A surname from Mandarin.

Similar: Sizhou, Ssu-chou

proper noun

1. alternative Alternative form of Xi.Xi