Definitions from Wiktionary (supereon)
▸ noun: (geology) A time period encompassing more than one eon, principally used to characterize the Precambrian.
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▸ noun: (geology) A time period encompassing more than one eon, principally used to characterize the Precambrian.
Similar:
Precambrian,
subepoch,
aeon,
geologic era,
epoch,
Phanerozoic,
Pre-Cambrian,
Eoarchean,
eonothem,
Archaean,
more...
Opposite:
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▸ Invented words related to supereon