Definitions for "Andromeda Galaxy"
The Andromeda galaxy is the largest of the local galaxies, and is visible to the unaided eye. It is about 2 million light years from our own galaxy and has a beautiful spiral structure. The Andromeda galaxy is also known as M31. The Andromeda galaxy and the Milky Way galaxy will eventually collide.
The large spiral galaxy located some 700,000 parsecs from the sun; the most distant object visible to the unaided eye.
a spiral galaxy in the constellation of Andromeda that is visible to the naked eye