tantalum

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a hard grey lustrous metallic element that is highly resistant to corrosion;
occurs in niobite and fergusonite and tantalite
• Syn:
Ta, atomic number 73
• Hypernyms:
metallic element, metal
• Substance Holonyms:
fergusonite, niobite, columbite, tantalite

• Từ đồng nghĩa / Synonyms:
  Ta, atomic number 73