variants
or chiefly British aeon
1
: an immeasurably or indefinitely long period of time : age
I haven't seen him in eons.
2
a
: a very large division of geologic time usually longer than an era
the Archean eon
b
: a unit of geologic time equal to one billion years
Examples of eon in a Sentence
Recent Examples on the Web
From the Asian elephant to the gharial, there’s a staggering array of native wildlife that’s been calling India home for eons, with no shortage of iconic mammals, birds and reptiles to be found during a visit.
—
Jared Ranahan, Forbes.com, 3 Apr. 2025
His size, skill set, versatility, vision and feel for the game form the most complete package the sport has seen in eons.
—Jon Wilner, Mercury News, 31 Mar. 2025
Though the global changes of the Cryogenic happened eons ago, Kirkland sees parallels with the wide-scale climate changes of today.
—Ars Technica, 28 Feb. 2025
Most fundamentally, quantum computing promises to provide answers to problems previously thought unsolvable—puzzles that would take eons for the world’s best classical computers to crack.
—Charina Chou, Foreign Affairs, 7 Jan. 2025
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Jared Ranahan, Forbes.com, 3 Apr. 2025
His size, skill set, versatility, vision and feel for the game form the most complete package the sport has seen in eons.
—Jon Wilner, Mercury News, 31 Mar. 2025
Though the global changes of the Cryogenic happened eons ago, Kirkland sees parallels with the wide-scale climate changes of today.
—Ars Technica, 28 Feb. 2025
Most fundamentally, quantum computing promises to provide answers to problems previously thought unsolvable—puzzles that would take eons for the world’s best classical computers to crack.
—Charina Chou, Foreign Affairs, 7 Jan. 2025
See All Example Sentences for eon
Cite this Entry
“Eon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eon. Accessed 1 May. 2025.
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