Word:

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.
Noun1.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
Adj.1.archeozoic - formed in the earlier of two divisions of the Precambrian era; "archeozoic life forms"
Synonyms: archaeozoic
archaeozoic, early, geology
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archegoniate
Archegonium
Archegony
Archelogy
Archencephala
Archenemy
Archenteric
Archenteron
archeobacteria
archeologic
archeological
archeological remains
archeological site
archeologist
Archeology
archeopteryx
-- archeozoic --
Archeozoic eon
archepiscopal
Archer
Archer fish
Archeress
archerfish
Archership
Archery
Arches
Arches court
Arches National Park
archespore
archesporial
archesporium
Archetypal
Archetypally
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