Si

(redirected from ŠI)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Acronyms.

Si, river, China

Si,

river, China: see XiXi
or Xi Jiang
, great river of S China, c.1,250 mi (2,010 km) long, rising in E Yunnan prov. and flowing generally E through Guangxi and Guangdong provs. to the South China Sea near Guangzhou; the Kui, Bei, and Dong rivers are its chief tributaries.
..... Click the link for more information.
.

Si, chemical symbol

Si,

symbol for the element siliconsilicon,
nonmetallic chemical element; symbol Si; at. no. 14; interval in which at. wt. ranges 28.084–28.086; m.p. 1,410°C;; b.p. 2,355°C;; sp. gr. 2.33 at 25°C;; valence usually +4.
..... Click the link for more information.
.

SI, abbreviation for the International System of Units

SI:

see International System of UnitsInternational System of Units,
officially called the Système International d'Unités, or SI, system of units adopted by the 11th General Conference on Weights and Measures (1960). It is based on the metric system.
..... Click the link for more information.
.

Si

(chemistry)

SI

International System of Units (SI)

A system of units based on the following fundamental quantities: metre, kilogram, second, ampere, kelvin, candela, and mole.

SI

Xi

, Hsi, Si
a river in S China, rising in Y?nnan province and flowing east to the Canton delta on the South China Sea: the main river system of S China. Length: about 1900 km (1200 miles)

SI

(unit)
Syst?me International.

SI

(character)

si

(networking)
The country code for Slovenia.