| slovo | definícia |
yttrium
(encz) | yttrium,ytrium n: [chem.] PetrV |
yttrium
(encz) | yttrium,yttrium n: Zdeněk Brož |
yttrium
(czen) | yttrium,yttriumn: Zdeněk Brož |
Yttrium
(gcide) | Yttrium \Yt"tri*um\, n. [NL., from Ytterby, in Sweden. See
Erbium.] (Chem.)
A rare metallic element of the boron-aluminium group, found
in gadolinite and other rare minerals, and extracted as a
dark gray powder. Symbol Y. Atomic number 39. Atomic weight,
88.9. [Written also ittrium.]
[1913 Webster +PJC]
Note: Associated with yttrium are certain rare elements, as
erbium, ytterbium, samarium, etc., which are separated
in a pure state with great difficulty. They are studied
by means of their spark or phosphorescent spectra.
Yttrium is now regarded as probably not a simple
element, but as a mixture of several substances.
[1913 Webster] |
yttrium
(wn) | yttrium
n 1: a silvery metallic element that is common in rare-earth
minerals; used in magnesium and aluminum alloys [syn:
yttrium, Y, atomic number 39] |
yttrium
(elements) | yttrium
Symbol: Y
Atomic number: 39
Atomic weight: 88.905
Silvery-grey metallic element of group 3 on the periodic table. Found in
uranium ores. The only natural isotope is Y-89, there are 14 other
artificial isotopes. Chemically resembles the lanthanoids. Stable in the
air below 400 degrees, celsius. Discovered in 1828 by Friedrich Wohler.
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| | podobné slovo | definícia |
Yttrium
(gcide) | Yttrium \Yt"tri*um\, n. [NL., from Ytterby, in Sweden. See
Erbium.] (Chem.)
A rare metallic element of the boron-aluminium group, found
in gadolinite and other rare minerals, and extracted as a
dark gray powder. Symbol Y. Atomic number 39. Atomic weight,
88.9. [Written also ittrium.]
[1913 Webster +PJC]
Note: Associated with yttrium are certain rare elements, as
erbium, ytterbium, samarium, etc., which are separated
in a pure state with great difficulty. They are studied
by means of their spark or phosphorescent spectra.
Yttrium is now regarded as probably not a simple
element, but as a mixture of several substances.
[1913 Webster] |
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