Word Noun
eon
n.
countable
C1 Advanced US /ˈiɑn/ UK /ˈiːɒn/ eon UK spelling aeon, eons
Definition
n.a very, very long period of time. It is often used to describe the age of the universe or the history of the Earth.
n.an extremely long period of time, typically used in geological or astronomical contexts to describe vast chronological spans.
Examples
“It felt like an eon since I last saw my friends.”
“The geologist explained that the formation of the mountain range took place over several eons of tectonic pressure.”
“While human history is measured in millennia, the universe itself has existed for billions of years, spanning an eon of cosmic expansion and stellar evolution.”
Etymology
From Latin aeon, from Ancient Greek αἰών (aiṓn, “age, era”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
This entry
Origin Ancient Greek αἰών
Level C1 · Advanced
Frequency Occasional
Updated