| 释义 |
Priscoan
Thesaurus| Noun | 1. | Priscoan - the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of lifeHadean, Hadean aeon, Hadean eon, Hadean time, Priscoan aeon, Priscoan eon |
EncyclopediaSeeHadeanPriscoan
Related to Priscoan: Priscoan eon, Priscoan periodSynonyms for Priscoannoun the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago)Synonyms- Hadean
- Hadean aeon
- Hadean eon
- Hadean time
- Priscoan aeon
- Priscoan eon
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