supereon

See also: supereón

English

Etymology

super- +‎ eon

Noun

supereon (plural supereons)

1. (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