archeozoic

(noun, adjective)

adjective

1. of or belonging to earlier of two divisions of the Precambrian era

- archeozoic life forms

Similar word(s): early, archaeozoic

noun

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

Similar word(s): archaeozoic, archean

Definition categories: time