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Từ điển WordNet v3.1 - WordNet Dictionary
ytterbite
a mineral that is a source of rare earths;
consists of silicates of iron and beryllium and cerium and yttrium and erbium
• Syn:
gadolinite
• Hypernyms:
mineral
• Substance Meronyms:
beryllium, Be, glucinium, atomic number 4, cerium,
Ce, atomic number 58, erbium, Er, atomic number 68, gadolinium,
Gd, atomic number 64, holmium, Ho, atomic number 67, terbium,
Tb, atomic number 65, ytterbium, Yb, atomic number 70, yttrium,
Y, atomic number 39
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