archeozoic

adj.	1.	(Geol.) same as archaeozoic.
n.	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.

Noun	1.	Archeozoic - the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life Synonyms: Archaeozoic, Archaeozoic aeon, Archean, Archean aeon, Archean eon, Archeozoic eon
Adj.	1.	archeozoic - formed in the earlier of two divisions of the Precambrian era; "archeozoic life forms" Synonyms: archaeozoic