Found 2 items, similar to Archaeozoic.
English → English (WordNet) Definition: Archaeozoic Archaeozoic n : the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life [syn: Archean, Archean eon, Archean aeon , Archeozoic, Archeozoic eon, Archaeozoic aeon]
English → English (gcide) Definition: Archaeozoic archaeozoic \archaeozoic\, Archaeozoic \Ar`ch[ae]*o*zo"ic\, a. [Gr. 'archai^os ancient + zw^,on animal.] (Zo["o]l.) 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] 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]