Definitions

1. noun

A type of galaxy, specifically a spiral galaxy in the constellation Pegasus, which is the largest member of the Local Group and nearly as large as the Milky Way.

“The Andromeda galaxy is the closest major galaxy to our own Milky Way.”

2. adjective

Relating to the constellation Andromeda or its galaxy.

“The Andromed spiral is a notable feature of the Andromeda galaxy.”