si is the dictionary form of sies Definition of si
si has definitions from the fields of music,linguistics,chemistry,physics,electronics |
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[ noun ] a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) mass (kilogram) time (second) electric current (ampere) temperature (kelvin) amount of matter (mole) and luminous intensity (candela)
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[ noun ] (chemistry,physics,electronics) 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
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