Definition of Selenium. Meaning of Selenium. Synonyms of Selenium

Here you will find one or more explanations in English for the word Selenium. Also in the bottom left of the page several parts of wikipedia pages related to the word Selenium and, of course, Selenium synonyms and on the right images related to the word Selenium.

Definition of Selenium

Selenium
Selenium Se*le"ni*um, n. [NL., from Gr. ??? the moon. So called because of its chemical analogy to tellurium (from L. tellus the earth), being, as it were, a companion to it.] (Chem.) A nonmetallic element of the sulphur group, and analogous to sulphur in its compounds. It is found in small quantities with sulphur and some sulphur ores, and obtained in the free state as a dark reddish powder or crystalline mass, or as a dark metallic-looking substance. It exhibits under the action of light a remarkable variation in electric conductivity, and is used in certain electric apparatus. Symbol Se. Atomic weight 78.9.

Meaning of Selenium from wikipedia

- Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are...
- Selenium is a portable framework for testing web applications. Selenium provides a playback tool for authoring functional tests without the need to learn...
- Selenium disulfide, also known as selenium sulfide, is a chemical compound and medication used to treat pityriasis versicolor, seborrhoeic dermatitis,...
- Selenium dioxide is the chemical compound with the formula SeO2. This colorless solid is one of the most frequently encountered compounds of selenium...
- Selenium deficiency is relatively rare in healthy well-nourished individuals. Few cases in humans have been reported.[citation needed] Selenium deficiency...
- doses, selenium is an essential micronutrient for animals. In plants, it sometimes occurs in toxic amounts as forage, e.g. locoweed. Selenium is a component...
- Selenium sulfide can refer to either of the following: Selenium disulfide, SeS2 Selenium hexasulfide, Se2S6...
- the oxygen family. It consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po). The chemically...
- A selenium rectifier is a type of metal rectifier, invented in 1933.[citation needed] They were used in power supplies for electronic equipment and in...
- Selenium chloride may refer to either of the following: Selenium monochloride, Se2Cl2 Selenium dichloride, SeCl2 Selenium tetrachloride, SeCl4...
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