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Eris

noun
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\ ˈer-is How to pronounce Eris (audio) \

Definition of Eris

: 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)

First Known Use of Eris

2006, in the meaning defined above

History and Etymology for Eris

Eris, ancient Greek goddess of strife

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Cite this Entry

“Eris.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Eris. Accessed 29 Mar. 2020.

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