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Entry 3 senses · 2 variants Webster, 1913

archaeozoic

· IPA
01 a. Like or belonging to the earliest forms of animal life.
  1. 1.
    Like or belonging to the earliest forms of animal life.(Zool.)
  2. 2.
    formed in or belonging to the earlier of two divisions of the Precambrian era.(Geol.)
Syn. archeozoic
02 n. 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 ea…
  1. 1.
    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