"archaeozoic" in the noun sense
1. Archean, Archean eon, Archean aeon, Archeozoic, Archaeozoic, Archeozoic eon, Archaeozoic aeon
the time from 3,800 million years to 2,500 million years ago earth's crust formed unicellular organisms are earliest forms of life
"archaeozoic" in the adjective sense
1. archeozoic, archaeozoic
of or belonging to earlier of two divisions of the Precambrian era
"archeozoic life forms"
Source: WordNet® (An amazing lexical database of English)
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