archaeozoic archaeozoic

Definition(s):

  1. (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
  2. (adj) of or belonging to earlier of two divisions of the Precambrian era
Word of the Day
cynic cynic
/ˈsɪ nɪk /