1. Adjective, meaning 'related to a galaxy.'

2. Noun, referring to people with extraterrestrial connections. In this meaning, the word Galactics is used e.g. for humans who remember life-times as an extraterrestrial entity, be it humanoid or non-humanoid, physical or non-physical. Some of these Galactics actually are aliens who chose to incarnate on earth, to experience a human lifetime. Part of them do this to assist humanity on its path to Ascension. They are usually referred to as Starseeds.

3. Adjective, derived from the noun Galactic.
a) Synonym of Extra-terrestrial.
b) referring to Starseeds, Galactic (or Ashtar) Command, etc.