Georgium Sidus

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Geor´gi`um Si`dus

1.(Astron.) The planet Uranus, so named by its discoverer, Sir W. Herschel.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
1781: Astronomer William Herschel discovers the planet Uranus - which he proposed calling Georgium Sidus, George's Star, after his patron George III.
| March 13 DISCOVERED by William Herschel with his telescope today in 1871 was the seventh planet from the Sun, named Georgium Sidus after George III but later renamed 'Uranus' after the Greek god of the sky.
The planet would come to be known as Uranus, but for Herschel it was Georgium Sidus, or George's star, named in honour of George III.