Etymology

Neoproterozoic

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Today it means: Of a geologic era within the Proterozoic eon; comprises the Tonian, Cryogenian and Ediacaran periods from about 1000 to 544 million years ago, when algae and sponges flourished. Full definition →

English Proterozoic ← Ancient Greek νεο- (neo-) ← Proto-Hellenic *néwos
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The story

  1. Proto-Indo-European*nu
  2. Proto-Indo-European*néwos
  3. Proto-Hellenic*néwos
  4. Ancient Greekνέος (néos)
  5. Ancient Greekνεο- (neo-)
  6. Englishneo-
  7. EnglishProterozoic
  8. English todayNeoproterozoic

From neo- + Proterozoic.

Etymology from Wiktionary, CC BY-SA 4.0.