Definitions for



Overview of noun sis

The noun sis has 1 senses? (first 1 from tagged texts)
1. (1) sister, sis

(a female person who has the same parents as another person; "my sister married a musician")


Overview of noun si

The noun si has 3 senses? (no senses from tagged texts)
1. silicon, Si, atomic number 14

(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)

2. Systeme International d'Unites, Systeme International, SI system, SI, SI unit, International System of Units, International System

(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")

3. ti, te, si

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

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