Standard Lemma guide

eonian

adj · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • US: /iˈoʊniən/
  • UK: /iːˈəʊnɪən/

1

adj

Meaning 1

Of or pertaining to an eon

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

eon-long, everlasting

Definition source: English Wiktionary via Wiktextract

Usage: broadly

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adjective

Meaning 3

of or relating to a geological eon (longer than an era)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: aeonian

Antonyms: none provided

4

adjective satellite

Meaning 4

continuing forever or indefinitely

Definition source: Princeton WordNet 3.0

Examples

  • the ageless themes of love and revenge
  • eternal truths
  • life everlasting
  • hell's perpetual fires
  • the unending bliss of heaven

Meaning relationships

Synonyms: ageless, aeonian, eternal, everlasting, perpetual, unending, unceasing

Antonyms: none provided

History

Etymology

From Ancient Greek αἰώνιος (aiṓnios, “lasting for an age; perpetual; eternal”) + -an, the former from αἰών (aiṓn, “lifetime; aeon; age; generation”) (whence also eon, aeon) + -ιος (-ios, adjective suffix).