Eonian

//iˈoʊniən// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Of or pertaining to an eon
  2. 2
    eon-long, everlasting broadly

    "But I should turn mine ears and hear The moanings of the homeless sea, ⁠The sound of streams that swift or slow ⁠Draw down Æonian hills, and sow The dust of continents to be; […]"

Adjective
  1. 1
    continuing forever or indefinitely wordnet
  2. 2
    of or relating to a geological eon (longer than an era) wordnet

Example

More examples

"But I should turn mine ears and hear The moanings of the homeless sea, ⁠The sound of streams that swift or slow ⁠Draw down Æonian hills, and sow The dust of continents to be; […]"

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).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.