fluorine

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a nonmetallic univalent element belonging to the halogens;
usually a yellow irritating toxic flammable gas;
a powerful oxidizing agent;
recovered from fluorite or cryolite or fluorapatite (Freq. 1)
• Syn:
F, atomic number 9
• Hypernyms:
chemical element, element, gas, halogen
• Substance Holonyms:
fluorite, fluorspar, fluor, fluorapatite, cryolite, Greenland spar

• Từ đồng nghĩa / Synonyms:
  F, atomic number 9