Căutare în Webster - Dicționarul explicativ al limbii engleze

Pentru căutare rapidă introduceți minim 3 litere.

 

YTTRIUM - Definiția din dicționar

Traducere: română


Notă: Puteţi căuta fiecare cuvânt din cadrul definiţiei printr-un simplu click pe cuvântul dorit.

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]

&hand_; 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]