DICT.TW Dictionary Taiwan
18.224.65.198
Search for:
▼[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: WordNet (r) 2.0

 atomic number 85
      n : a highly unstable radioactive element (the heaviest of the
          halogen series); a decay product of uranium and thorium
          [syn: astatine, At]