# eon
## English

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### Alternative forms

* aeon (chiefly British or Gnostic)
* æon (dated, chiefly British or Gnostic)

### Etymology

From Latin aeon, from Ancient Greek αἰών (aiṓn, “age, era”).

### Pronunciation

* (US, Canada) IPA: /ˈi.ɑn/, /ˈeɪ.ɑn/
** Audio (US):(file)
* (UK) IPA: /ˈiː.ən/, /ˈiː.ɒn/, /ˈeɪ.ɒn/
** Homophone: Ian
* (General Australian)
** Audio (General Australian):(file)
* Rhymes: -iːɒn, (UK) -iːən

### Noun

eon (plural eons)
* Eternity, the duration of the universe.
* An immeasurably or indefinitely long period of time.
* (US, informal, hyperbolic) A long period of time.
    It’s been eons since we last saw each other.
* (astronomy, geology) A period of one billion (short scale, i.e. 1,000,000,000) years.
** 2012 January, Robert L. Dorit, “Rereading Darwin”, in American Scientist‎, volume 100, number 1, archived from the original on 14 November 2012, page 23:We live our lives in three dimensions for our threescore and ten allotted years. Yet every branch of contemporary science, from statistics to cosmology, alludes to processes that operate on scales outside of human experience: the millisecond and the nanometer, the eon and the light-year.
* (geology) The longest geochronologic unit, being a period of hundreds of millions of years; subdivided into eras.
* (Gnosticism, usually spelled aeon or æon) A spirit being emanating from the Godhead.

#### Derived terms

* Archean eon
* eonian
* eonic
* geon
* Hadean eon
* light eon
* Phanerozoic eon
* Proterozoic eon
* supereon
* temporal æon

#### Translations
### Anagrams

* -one, NEO, NOE, Neo, Noe, eno-, neo, neo-, one

## Dutch
### Etymology

Borrowed from Latin aeon, from Ancient Greek αἰών (aiṓn, “age”).

### Pronunciation

* Audio:(file)

### Noun

eon m or n (plural eonen, diminutive eoontje n or eonnetje n)
* eon; eternity
* (geology) eon, aeon
* (informal, hyperbolically) eon
* a period of 1,000,000,000 years
* (Gnosticism) eon

#### Related terms

* eeuw

### Anagrams

* neo-

## Norwegian Bokmål
### Etymology

From Latin aeon, from Ancient Greek αἰών (aiṓn, “age”).

### Noun

eon n (definite singular eonet, indefinite plural eon or eoner, definite plural eona or eonene)
* eon; eternity
* (geology) eon, aeon
* (informal, hyperbolically) eon
* A period of 1,000,000,000 years.
* (Gnosticism) eon

### References

* “eon” in The Ordnett Dictionary

## Norwegian Nynorsk
### Etymology

From Latin aeon, from Ancient Greek αἰών (aiṓn, “age”).

### Noun

eon n (definite singular eonet, indefinite plural eon, definite plural eona)
* eon; eternity
* (geology) eon, aeon
* (informal, hyperbolically) eon
* A period of 1,000,000,000 years.
* (Gnosticism) eon

## Polish
### Etymology

Learned borrowing from Late Latin aeōn.

### Pronunciation

* IPA: /ˈɛ.ɔn/
* Audio:(file)
* Rhymes: -ɛɔn
* Syllabification: e‧on

### Noun

eon m inan
* eon (immeasurably or indefinitely long period of time)
    Synonyms: era, wiek
* (geology) eon (longest geochronologic unit, being a period of hundreds of millions of years; subdivided into eras)

#### Declension
### Noun

eon m animal
* (Gnosticism) aeon (spirit being emanating from the Godhead)

#### Declension
### Further reading

* eon in Polish dictionaries at PWN
* eon in PWN's encyclopedia

## Romanian
### Etymology

Borrowed from French éon.

### Noun

eon m (plural eoni)
* eon

#### Declension
## Serbo-Croatian
### Pronunciation

* IPA: /ěoːn/
* Hyphenation: e‧on

### Noun

èōn m (Cyrillic spelling ѐо̄н)
* eon

#### Declension
### Further reading

* “eon”, in Hrvatski jezični portal [Croatian language portal] (in Serbo-Croatian), 2006–2025

## Swedish
### Noun

eon c
* eon; eternity
* (geology) eon

#### Declension
### References

* eon in Svensk ordbok (SO)
* eon in Svenska Akademiens ordlista (SAOL)
* eon in Svenska Akademiens ordbok (SAOB)

### Anagrams

* Neo