graphite

Từ điển Oxford Learners Wordfinder Dictionary

noun

used as a lubricant and as a moderator in nuclear reactors (Freq. 5)
• Syn:
black lead, plumbago
• Hypernyms:
carbon, C, atomic number 6
• Hyponyms:
lead, pencil lead, pencil

• Từ đồng nghĩa / Synonyms:
  black lead, plumbago