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.
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
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Selenium is a
chemical element; it has
symbol Se and
atomic number 34. It has
various physical appearances,
including a brick-red powder, a
vitreous black...
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Selenium is an open
source umbrella project for a
range of
tools and
libraries aimed at
supporting browser automation. It
provides a
playback tool for...
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Selenium disulfide, also
known as
selenium sulfide, is a
chemical compound and
medication used to
treat seborrheic dermatitis, dandruff, and pityriasis...
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Selenium fluoride may
refer to:
Selenium tetrafluoride (
selenium(IV) fluoride), SeF4
Selenium hexafluoride (
selenium(VI) fluoride), SeF6
Seleninyl fluoride...
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oxygen family.
Group 16
consists of the
elements oxygen (O),
sulfur (S),
selenium (Se),
tellurium (Te), and the
radioactive elements polonium (Po) and livermorium...
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Selenium is an
essential mineral micronutrient for animals,
though it is
toxic in
large doses. In plants, it
sometimes occurs in
toxic amounts as forage...
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Selenium sulfide can
refer to
either of the following:
Selenium disulfide, SeS2
Selenium hexasulfide, Se2S6 This set
index article lists chemical compounds...
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Selenium has six
natural isotopes that
occur in
significant quantities,
along with the
trace isotope 79Se,
which occurs in
minute quantities in uranium...
- the
range of
shades visible in a
print without reducing the contrast.
Selenium toning is
especially effective in this regard. Some
toning processes can...
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Selenium deficiency occurs when an
organism lacks the
required levels of
selenium, a
critical nutrient in many species. Deficiency,
although relatively...
