eon
noun
\ ˈē-ən
, ˈē-ˌän
\
, ˈē-ˌän
\
variants:
or chiefly British aeon
Definition of eon
1
: an immeasurably or indefinitely long period of time : age
I haven't seen him in eons.
2a
: 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
Six years later, eons in technology years, Tesla's Supercharger network has grown enormously. — David Williams For Cnn, CNN, "950 miles in two days. Taking an electric road trip in a Tesla," 25 July 2019 Up until now, the MCU has largely taken place in the 20th and 21st centuries, but Feige has previously said since The Eternals focuses on a group of ancient, everlasting beings, the film will span eons in their lives. — Devan Coggan, EW.com, "Marvel introduces The Eternals at Comic-Con with Angelina Jolie, Richard Madden, and more," 20 July 2019 The team believes comparing the surface samples subjected to eons of space weathering and the more pristine material from the interior will provide clues to the origins and evolution of the solar system. — Dennis Normile, Science | AAAS, "In a first, a Japanese spacecraft appears to have collected samples from inside an asteroid," 11 July 2019 Formed by eons of erosion, Upper and Lower Antelope canyons require a Navajo guide to visit, which can be booked online. — Steve Larese, National Geographic, "Eight epic stops in the Four Corners region," 27 June 2019 Astronomers have been excited by the Moon for eons, a level that has grown considerably as technological advancements gave humanity access to its surface, and helped researchers make observations from afar. — Fox News, "Mysterious light flashes on the Moon have been baffling researchers for decades," 6 June 2019 Animals adapt over eons to be perfectly suited to their natural environments. — Natasha Daly, National Geographic, "Meet the animals that survive extreme desert conditions," 25 Apr. 2019 In the standard paradigm of the Hadean eon, these strikes culminated in an assault dubbed the Late Heavy Bombardment, also known as the lunar cataclysm, in which asteroids emigrated to the inner solar system and pounded the rocky planets. — Quanta Magazine, "Fossil Discoveries Challenge Ideas About Earth’s Start," 22 Jan. 2018 This far from base reality, the haywire way that things go—Rhea’s death, the narrow and fragile window of our moment in all the cold eons, even Little Sister ravening to survive—make a kind of sense now. — Smith Henderson, Popular Mechanics, "Olympia," 20 Nov. 2017These example sentences are selected automatically from various online news sources to reflect current usage of the word 'eon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for eon
eon
noun
English Language Learners Definition of eon
: a very long period of time
See the full definition for eon in the English Language Learners Dictionary
eon
Kids Definition of eon
variant of aeon
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