PRISCOAN

Pronunciation (US):

(GB):

 Dictionary entry overview: What does Priscoan mean? 

• PRISCOAN (noun)
  The noun PRISCOAN has 1 sense:

1. 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 life

  Familiarity information: PRISCOAN used as a noun is very rare.

 Dictionary entry details 

• PRISCOAN (noun)

Sense 1

Meaning:

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 life

Classified under:

Nouns denoting time and temporal relations

Synonyms:

Hadean; Hadean aeon; Hadean eon; Hadean time; Priscoan; Priscoan aeon; Priscoan eon

Instance hypernyms:

aeon; eon (the longest division of geological time)