Eris Definition
îrĭs, ĕr-
noun
The goddess of strife and discord.
Webster's New World
A large dwarf planet of the solar system, orbiting beyond, & roughly the size of, Pluto: diameter, c. 2,330 km (c. 1,450 mi); one satellite.
Webster's New World
pronoun
(astronomy) The largest known dwarf planet in the Solar System (initially dubbed the "tenth planet"), officially known as 136199 Eris, with one natural satellite, Dysnomia.
Wiktionary
Origin of Eris
From Ancient Greek Ἔρις (Eris), from ἔρις (eris, “strife”).
From Wiktionary
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