n. 镱

[化] 镱Yb

[医] 镱(70号元素)

[ noun ]
a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime
<noun.substance>

Ytterbium \Yt*ter"bi*um\, n. [NL., fr. Ytterby, in Sweden. See
{Erbium}.] (Chem.)
A rare element of the boron group, sometimes associated with
yttrium or other related elements, as in euxenite and
gadolinite. Symbol Yb; provisional atomic weight 173.2. Cf.
{Yttrium}.

Note: Ytterbium is associated with other rare elements, and
probably has not been prepared in a pure state.