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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

A team co-led by Southwest Research Institute found evidence for hydrothermal or metamorphic activity within the icy dwarf planets Eris and Makemake, located in the Kuiper Belt.

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

“That made us even stronger because Eris was by my side,” Conti said.

From Los Angeles Times • Dec. 8, 2023

Eris breathed a shadowy spray of buckshot across the void.

From "The House of Hades" by Rick Riordan

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.