Ce

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a ductile grey metallic element of the lanthanide series;
used in lighter flints;
the most abundant of the rare-earth group
• Syn:
cerium, atomic number 58
• Derivationally related forms:
cerous (for: cerium)
• Hypernyms:
metallic element, metal
• Substance Holonyms:
monazite, bastnasite, bastnaesite, gadolinite, ytterbite