YTTERBIUMS

Noun

ytterbiums

plural of ytterbium

Source: Wiktionary

YTTERBIUM

Yt*ter"bi*um, n. Etym: [NL., fr. Ytterby, in Sweden. See Erbium.] (Chem.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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