DICT.TW Dictionary Taiwan
3.144.86.38
Search for:
▼[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: WordNet (r) 2.0

 atomic number 5
      n : a trivalent metalloid element; occurs both in a hard black
          crystal and in the form of a yellow or brown powder [syn:
           boron, B]