(now rare) The Milky Way; the apparent band of concentrated stars which appears in the night sky over earth.

To furnish with galaxies. / (archaic) To gather together into a luminous whole.

(astronomy, dated) the Milky Way Galaxy, from before it was realized that the Milky Way was not the only "galaxy"

plural of galaxy

(Internet slang, often sarcastic) Enigmatic, perplexing, unfathomable; difficult to understand or comprehend.

(astronomy) A type of starburst galaxy that primarily emits radiation in the sub-mm/T-hertz range. Due to the extreme dustiness of the galaxy, they are visible mostly in infrared emissions at their redshift, which are subsequently redshifted into the submm/THz range by Hubble expansion.

(astronomy) Ellipsis of green pea galaxy.

Alternative form of galaxy-brain

A galaxy having a smooth, featureless light-profile. It is one of the three main classes of galaxies originally described by Edwin Hubble in his 1936 work “The Realm of the Nebulae”.

(galaxies) a type of galaxy created by ram pressure stripping the interstellar gas from a galaxy by the high temperature higher pressure intracluster medium, forming long tendrils of concentrated gas trailing behind the galaxy, which form nebulae and new stars, giving the appearance of celestial jellyfish