ARCHEAN EON as NOUN

  1. Meaning
    • the time from 3,800 million years to 2,500 million years ago
    • earth’’s crust formed
    • unicellular organisms are earliest forms of life
    Synonym(s) Hypernyms(s) Archean eon is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower