noun ap·o·ga·lac·te·um \ˌapəgəˈlaktēəm, -kshēəm; -ˌgaˌlakˈtē-\

Definition of apogalacteum



  1. :  the point of the hypothetical orbit of the sun or another star at which it is most remote from the galactic nucleus

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 apogalacteum

New Latin, from apo- + -galacteum (from Greek galakt-, gala milk) — more at galaxy

Seen and Heard

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


a trip made at another's expense

Get Word of the Day daily email!