Neoproterozoic

adj, name

adj, name ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    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. not-comparable
Proper Noun
  1. 1
    The Neoproterozoic era.

Example

More examples

"At one time, Rodinia contained most, if not all, of Earth’s landmass, and began to break apart about 750 million years ago during the Neoproterozoic era."

Etymology

From neo- + Proterozoic.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.