Etymology

Georgium Sidus

Today it means: The planet Uranus. Full definition →

Latin Geōrgium Sīdus
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The story

  1. Latin · learned borrowing fromGeōrgium Sīdus
  2. English todayGeorgium Sidus

Learned borrowing from Latin Geōrgium Sīdus. Coined by German-born British astronomer and composer William Herschel in 1781, after King George III.

First known use, by meaning

  • from 18th c. The planet Uranus.

Etymology from Wiktionary, CC BY-SA 4.0.