supereon

See also: supereón

English

Etymology

super- +‎ eon

Noun

supereon (plural supereons)

(geology) A time period encompassing more than one eon, principally used to characterize the Precambrian.
- 2015, Charles S. Cockell, Astrobiology: Understanding Life in the Universe, page 254:
  Sometimes the Hadean, Archean and Proterozoic are lumped together in a supereon called the Precambrian.

Anagrams

esuprone, peroneus

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