Alpha Orionis

noun Alpha Or·i·o·nis \-ˌȯr-ē-ˈō-nəs\

Definition of Alpha Orionis


  1. :  betelgeuse

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 alpha orionis

borrowed from New Latin, “Alpha of Orion”

First Known Use: 1802

Seen and Heard

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


a brief usually trivial fact

Get Word of the Day daily email!