Mizar

play
noun Mi·zar \ˈmī-ˌzär\

Definition of Mizar

astronomy

  1. :  a group of stars of the second magnitude that is located near Alcor in the handle of the Big Dipper Alcor and Mizar, in the bend of the handle of the Big Dipper, are actually a complex system. Alcor is a binary and Mizar is a quadruple system of two binary stars. Keen eyes can usually split Alcor and Mizar into individual stars, but you'll need a telescope to resolve the other companions. — Becky Ramotowski, San Antonio Express-News, 21 June 2011 —called also Zeta Ursae Majoris Although historically called a star, what we know as Mizar is actually a set of four separate stars, tightly bound together in two pairs by gravity.

There's more!

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!
Already a subscriber? Log in.

1812

First Known Use of mizar

1812


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

capable of being altered or controlled

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!