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Definition of SI
Pronunciation : SI

noun : SI

Source:WordNet 3.1

  • 1. (

    ) a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors ;

  • 3. (

    ) the syllable naming the seventh (subtonic) note of any musical scale in solmization ;

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