| slovo | definícia |
zirconium
(encz) | zirconium,zirkonium n: [chem.] PetrV |
Zirconium
(gcide) | Zirconium \Zir*co"ni*um\, n. [NL.] (Chem.)
A rare element of the carbon-silicon group, intermediate
between the metals and nonmetals, obtained from the mineral
zircon as a dark sooty powder, or as a gray metallic
crystalline substance. Symbol Zr. Atomic weight, 90.4.
[1913 Webster] |
zirconium
(wn) | zirconium
n 1: a lustrous grey strong metallic element resembling
titanium; it is used in nuclear reactors as a neutron
absorber; it occurs in baddeleyite but is obtained chiefly
from zircon [syn: zirconium, Zr, atomic number 40] |
zirconium
(elements) | zirconium
Symbol: Zr
Atomic number: 40
Atomic weight: 91.22
Grey-white metallic transition element. Five natural isotopes and six
radioactive isotopes are known. Used in nuclear reactors for a neutron
absorber. Discovered in 1789 by Martin Klaproth, isolated in 1824 by
Berzelius.
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| | podobné slovo | definícia |
zirconium dioxide
(encz) | zirconium dioxide, n: |
zirconium oxide
(encz) | zirconium oxide, n: |
zirconium silicate
(encz) | zirconium silicate, n: |
Zirconium
(gcide) | Zirconium \Zir*co"ni*um\, n. [NL.] (Chem.)
A rare element of the carbon-silicon group, intermediate
between the metals and nonmetals, obtained from the mineral
zircon as a dark sooty powder, or as a gray metallic
crystalline substance. Symbol Zr. Atomic weight, 90.4.
[1913 Webster] |
zirconium dioxide
(wn) | zirconium dioxide
n 1: a white crystalline oxide; used in refractories and in
insulation and abrasives and enamels and glazes [syn:
zirconium oxide, zirconia, zirconium dioxide] |
zirconium oxide
(wn) | zirconium oxide
n 1: a white crystalline oxide; used in refractories and in
insulation and abrasives and enamels and glazes [syn:
zirconium oxide, zirconia, zirconium dioxide] |
zirconium silicate
(wn) | zirconium silicate
n 1: a common mineral occurring in small crystals; chief source
of zirconium; used as a refractory when opaque and as a gem
when transparent [syn: zircon, zirconium silicate] |
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