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Eon vs Proterozoic - What's the difference?

eon | proterozoic |

eon

English

Alternative forms

* aeon (chiefly British or Gnostic) * (qualifier)

Noun

(wikipedia eon) (en noun)
  • (US) Eternity.
  • A period of 1,000,000,000 years.
  • *{{quote-magazine, date=2012-01
    • , author=Robert L. Dorit , title=Rereading Darwin , volume=100, issue=1, page=23 , magazine= citation , passage=We live our lives in three dimensions for our threescore and ten allotted years. Yet every branch of contemporary science, from statistics to cosmology, alludes to processes that operate on scales outside of human experience: the millisecond and the nanometer, the eon and the light-year.}}
  • (geology) The longest time period used in geology.
  • (US, informal, hyperbole) A long period of time.
    • It's been eons since we last saw each other.
  • A spirit being emanating from the Godhead.

    • Derived terms

    * Archean eon * eonian *

    Anagrams

    * * ----

    proterozoic

    English

    (wikipedia Proterozoic)

    Proper noun

    (en proper noun)
  • (geology) The eon from 2,500 Ma to 541.0±1.0 Ma, the beginning of the Phanerozoic, marked by the build up of oxygen in the atmosphere and the emergence of primitive multicellular life.

    • Hypernyms

    * Precambrian - eon/supereon

    Hypernyms

    * Paleoproterozoic, Mesoproterozoic, Neoproterozoic

    Coordinate terms

    * Archaean - preceding eon, Cambrian - succeeding eon

    Adjective

    (-)
  • (geology) Of, or relating to the geologic eon from 2,500 Ma to 541.0±1.0 Ma.

    • See also

    *