Associations to the word «Si»

Wiktionary

SI, symbol. The ISO 3166-1 two-letter (alpha-2) code for Slovenia.
SI, symbol. The abbreviation for Système International d'Unités or the International System of Units, commonly known as the metric system.
SI, noun. (music) A syllable used in solfège to represent the seventh note of a major scale.
SI, symbol. (element symbol) Symbol for silicon.
SI, proper noun. A diminutive of the male given name Simon.
SI, proper noun. Diminutive of the male given name Silas.
SI QUIS, noun. A notification by a candidate for Holy Orders of his intention to enquire whether any impediment may be alleged against him.

Dictionary definition

SI, noun. 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.
SI, noun. 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".
SI, noun. The syllable naming the seventh (subtonic) note of any musical scale in solmization.

Wise words

The difference between the right word and the almost right word is the difference between lightning and a lightning bug.
Mark Twain