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Eris

American  
[eer-is, er-is] / ˈɪər ɪs, ˈɛr ɪs /

noun

  1. the ancient Greek goddess of discord and the sister of Ares: identified with the Roman goddess Discordia.

Eris 1 British  
/ ˈɛrɪs /

noun

  1. Greek myth the goddess of discord, sister of Ares

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Eris 2 British  
/ ˈɛrɪs /

noun

  1. the largest dwarf planet in the solar system, located beyond the Kuiper belt. It has a diameter of 2400 km

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Eris Scientific  
/ îr′ĭs,ĕr′- /

  1. A dwarf planet with a diameter of about 2,400 kilometers (1,500 miles). When Eris was discovered in 2005, it and its satellite Dysnomia were the farthest known celestial bodies in the Solar System.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

We discovered Eris, which is more massive than Pluto.

From National Geographic • Feb. 16, 2024

Eris and Makemake are comparable in size to Pluto and its moon Charon.

From Science Daily • Feb. 15, 2024

Two alumni, Petra Conti and Eris Nezha, recently founded their own company, the Hollywood Ballet.

From New York Times • Feb. 6, 2024

None of these are optimized for newer versions of the virus, including the Eris and Pirola variants that became prominent in August and appear better able to escape the immune system than previous mutants.

From Scientific American • Oct. 16, 2023

The evil goddess of Discord, Eris, was naturally not popular in Olympus, and when the gods gave a banquet they were apt to leave her out.

From "Mythology: Timeless Tales of Gods and Heroes" by Edith Hamilton

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.