Alcor

play
noun Al·cor \(ˈ)al-¦kȯr\

Definition of Alcor

astronomy

  1. :  a faint star of the fourth magnitude that is located near Mizar in the handle of the Big Dipper And it's at the bend of the Dipper's handle that an interesting object resides. Look here to spot a “double” star. These two are known by their proper names, Mizar, and its fainter companion, Alcor, also called the “horse and rider.” — Dennis Mammana, Newsday, 28 May 2011 —called also 80 Ursae Majoris

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of alcor

borrowed from New Latin, perhaps borrowed from Arabic al-khawr “depression, gulf,” a variant reading of the consonants in al-jawn literally, “black, black horse,” a name for ε Ursae Minoris


First Known Use: 1675


Seen and Heard

What made you want to look up Alcor? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

feeling or affected by lethargy

Get Word of the Day daily email!