Ar·cheo·zo·ic /ˌɑrkiəˈzoɪk/
始生代
archeozoic
adj : formed in the earlier of two divisions of the Precambrian
era; "archeozoic life forms" [syn: archaeozoic]
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 eon, Archean
aeon, Archaeozoic, Archeozoic eon, Archaeozoic aeon]