Definition of galactic equator
: the great circle of the celestial sphere halfway between the galactic poles parallel to and about 1 degree north of the center line of the Milky Way and inclined about 62 degrees to the celestial equator
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
Share galactic equator