/siˈ/ - [see] -
We found 8 definitions of si from 6 different sources.
Noun |
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si - 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 | ||
silicon, Si, atomic number 14 | ||
chemical element, element the most favorable environment for a plant or animal; "water is the element of fishes" | ||
semiconducting material, semiconductor a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; its conductivity increases with temperature and in the presence of impurities | ||
silicone, silicone polymer any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation | ||
clay United States politician responsible for the Missouri Compromise between free and slave states (1777-1852) | ||
feldspar, felspar any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium | ||
granite something having the quality of granite (unyielding firmness); "a man of granite" | ||
quartz a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities | ||
si - a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela); "Today the United States is the only country in the world not totally committed to the Systeme International d'Unites" | ||
Systeme International d'Unites, Systeme International, SI system, SI, SI unit, International System of Units, International System | ||
si - the syllable naming the seventh (subtonic) note of any musical scale in solmization | ||
ti, te |