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• si
  si

  noun

  the syllable used for the seventh tone of a scale and sometimes for the tone B.
• Si
  Si

  silicon.
• SI
  SI

  abbreviation

  International System of Units.
• S.I.
  S.I.

  abbreviation

  Sandwich Islands.

si

¹ American  

[see] / si /

noun

Music.

1. the syllable used for the seventh tone of a scale and sometimes for the tone B.

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Si ² American  

Symbol, Chemistry.

1. silicon.

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SI ³ American  

abbreviation

1. International System of Units.

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S.I. ⁴ American  

abbreviation

1. Sandwich Islands.

2. Staten Island.

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SI ¹ British  

symbol

1. Système International (d'Unités) See SI unit

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abbreviation

1. South Island

Si ² British  

/ ʃiː /

noun

1. a variant transliteration of the Chinese name for the Xi

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Si ³ British  

symbol

1. silicon

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si ⁴ British  

/ siː /

noun

1. music a variant of te

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si ⁵ British  

abbreviation

1. Slovenia

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Etymology

Origin of si

First recorded in 1720–30; see origin at gamut

Example Sentences

“Si, si. That’s what I mean. Subito, subito!”

From "Catch-22" by Joseph Heller

“Ah, si. But what about your heart, Zuri Luz?” she says.

From "Pride" by Ibi Zoboi

“Pues, si. I’m glad you aren’t holed up in your room all the time.”

From "The First Rule of Punk" by Celia C. Pérez

“Si, si. It is a hot one today,” Mr. Borelli answered.

From "Moon Over Manifest" by Clare Vanderpool

“Ah, si. Es muy buena gente,” Mama said, finally recalling who he was.

From "The Circuit: Stories from the Life of a Migrant Child" by Francisco Jiménez