DICT.TW Dictionary Taiwan
18.220.163.144

Search for:
[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: WordNet (r) 2.0

 atomic number 18
      n : a colorless and odorless inert gas; one of the six inert
          gases; comprises approximately 1% of the earth's
          atmosphere [syn: argon, Ar]