Eris

noun

ˈer-is

: a dwarf planet with a mean distance from the sun of 67 astronomical units (6.2 billion miles) and a diameter of 1500 miles (2400 kilometers)

Word History

Etymology

Eris, ancient Greek goddess of strife

First Known Use

2006, in the meaning defined above

Time Traveler

The first known use of Eris was in 2006

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Cite this Entry

Style

“Eris.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Eris. Accessed 29 Jul. 2025.

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