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The Collaborative International Dictionary of English v.0.48 (gcide)

Archaeozoic \Archaeozoic\ n. [Gr. 'archai^os ancient zw^,on
animal.]
the time from 1.5 billion to 5 billion years ago; the time
when the earth's crust formed; a time when only unicellular
organisms and the earliest forms of life are present.

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


archaeozoic \archaeozoic\, Archaeozoic \Ar`ch[ae]*o*zo"ic\, a.
[Gr. 'archai^os ancient zw^,on animal.] (Zool.)
Like or belonging to the earliest forms of animal life.
[1913 Webster]

2. (Geol.) formed in or belonging to the earlier of two
divisions of the Precambrian era. archaeozoic life forms

Syn: archeozoic
[WordNet 1.5]

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