Archeozoic

from WordNet (r) 3.0 (2006)

archeozoic
    adj 1: of or belonging to earlier of two divisions of the
           Precambrian era; "archeozoic life forms" [syn:
           {archeozoic}, {archaeozoic}]
    n 1: 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}, {Archeozoic}, {Archaeozoic}, {Archeozoic
         eon}, {Archaeozoic aeon}]

from The Collaborative International Dictionary of English v.0.48

archeozoic \archeozoic\ adj.
   1. 1 (Geol.) same as {archaeozoic}.

   Syn: archaeozoic
        [WordNet 1.5]

from The Collaborative International Dictionary of English v.0.48

Archeozoic \Archeozoic\ n.
   1. 1 the time from 1.5 billion to 5 billion years ago, when
      the earth's crust was formed; the time when only
      unicellular organisms and the earliest forms of life are
      present. Same as {Archaeozoic}.

   Syn: Archaeozoic, Archeozoic era, Archaeozoic era
        [WordNet 1.5]

[email protected]