Erisn.

Brit.

/ˈɛrɪs/, U.S.

/ˈɛrəs/

Origin: A borrowing from Greek. Etymon: Greek Ἔρις.

Etymology: < ancient Greek Ἔρις, the name of the goddess of discord and strife, personification of ἔρις quarrel, strife, of unknown origin.

Astronomy.

(The name of) a trans-Neptunian dwarf planet orbiting the sun, mostly beyond the orbit of Pluto, and having a mass greater than that of Pluto.Eris, the ninth most massive object currently known to orbit the sun, was discovered in 2005 by a team of astronomers led by Mike Brown of the California Institute of Technology. The discovery was one of the main factors leading to the reclassification of Pluto as a dwarf planet.

ΚΠ

2006 Sci. News 7 Oct. 237/1 The International Astronomical Union..announced on Sept. 14 that the body, which had provisionally been called UB 313..would now be officially called Eris.

2008 Post-Standard (Syracuse, N.Y.) 1 Mar. a2 Ceres, Pluto and Eris are considered dwarf planets.

2012 M. Brown How I killed Pluto (new ed.) xiii. 244 When we first measured the size of Eris we found that it was 1,490 miles across, or about 5 percent larger than Pluto.

This is a new entry (OED Third Edition, June 2015; most recently modified version published online March 2022).

单词	eris
释义	Erisn. Brit. /ˈɛrɪs/, U.S. /ˈɛrəs/ Origin: A borrowing from Greek. Etymon: Greek Ἔρις. Etymology: < ancient Greek Ἔρις, the name of the goddess of discord and strife, personification of ἔρις quarrel, strife, of unknown origin. Astronomy. (The name of) a trans-Neptunian dwarf planet orbiting the sun, mostly beyond the orbit of Pluto, and having a mass greater than that of Pluto.Eris, the ninth most massive object currently known to orbit the sun, was discovered in 2005 by a team of astronomers led by Mike Brown of the California Institute of Technology. The discovery was one of the main factors leading to the reclassification of Pluto as a dwarf planet. ΚΠ 2006 Sci. News 7 Oct. 237/1 The International Astronomical Union..announced on Sept. 14 that the body, which had provisionally been called UB 313..would now be officially called Eris. 2008 Post-Standard (Syracuse, N.Y.) 1 Mar. a2 Ceres, Pluto and Eris are considered dwarf planets. 2012 M. Brown How I killed Pluto (new ed.) xiii. 244 When we first measured the size of Eris we found that it was 1,490 miles across, or about 5 percent larger than Pluto. This is a new entry (OED Third Edition, June 2015; most recently modified version published online March 2022). < n.2006
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