si

noun
\ ˈsē How to pronounce si (audio) \

Definition of si

 (Entry 1 of 3)

Definition of Si (Entry 2 of 3)

silicon

Definition of SI (Entry 3 of 3)

International System of Units

First Known Use of si

Noun

1728, in the meaning defined above

History and Etymology for si

Noun

Italian

Abbreviation

French Système International d'Unités

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Statistics for si

Cite this Entry

“Si.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/si. Accessed 24 January 2020.

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More Definitions for si

Medical Definition of Si

 (Entry 1 of 2)

silicon

Medical Definition of SI (Entry 2 of 2)

International System of Units

History and Etymology for si

Abbreviation

French Système International d'Unités

More from Merriam-Webster on si

Rhyming Dictionary: Words that rhyme with si

Spanish Central: Translation of si

Comments on si

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