Archeozoic

or Ar·chae·o·zo·ic

[ ahr-kee-uh-zoh-ik ]
/ ˌɑr ki əˈzoʊ ɪk /
Geology

adjective

noting or pertaining to the earlier half of the Precambrian Era, from about 5 billion to 2.5 billion years ago, during which the earliest datable rocks were formed and from which the oldest known fossil forms, blue-green algae and bacteria, have been recovered.

noun

the Archeozoic division of geologic time or the rock systems formed then.

Origin of Archeozoic

1870–75; archeo- + Greek zō(ḗ) life + -ic

Example sentences from the Web for archeozoic

British Dictionary definitions for archeozoic

Archeozoic
/ (ˌɑːkɪəˈzəʊɪk) /

adjective

a variant spelling (esp US) of Archaeozoic

Scientific definitions for archeozoic

Archeozoic

See Archean.