DICT.TW Dictionary Taiwan
3.142.54.241
Search for:
▼[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: WordNet (r) 2.0

 Archean eon
      n : the time from 3,800 million years to 2,500 million years
          ago; earth's crust formed; unicellular organisms are
          earliest forms of life [syn: Archean, Archean aeon, Archeozoic,
           Archaeozoic, Archeozoic eon, Archaeozoic aeon]