Si meaning

International System of weights and measures, using the metric system augmented by scientific units used in technology.
abbreviation
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noun
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Système International [d'Unités] (International System [of Units])
abbreviation
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Ti.
noun
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Sirach.
abbreviation
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(bible) Sirach (Ecclesiasticus)
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Silicon.
symbol
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Yes.
adverb
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Yes.
adverb
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Symbol for silicon. See silicon.
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Syst.
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(music) A syllable used in solfège to represent the seventh note of a major scale.
noun
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The ccTLD for Slovenia as assigned by the IANA.
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Origin of si

  • Italian from Medieval Latin gamut

    From American Heritage Dictionary of the English Language, 5th Edition

  • . + ISO 3166-1 country code for Slovenia, si.

    From Wiktionary