Allion or Beyondorientation is an umbrella term for all orientations that do not feel like they fit under the "normal" standards or expectations of what orientations can be. They may use concepts like space or plants to explain it, but this isn't always the case. The term is based on the concept of xenogenders.
Allion can be aspec, monospec, mspec, or otherwise, and it is open to be used by anyone, including those who are allosexual, alloromantic, and straight.
The plural of allion is allionim or allions, beyondorientations is also sometimes used.
Allion can also be used as a suffix or prefix, for example, nebulallion, or allionsexual.
History
The term was coined by spiralian on Tumblr, and others in the Mogai Multiverse Discord server, especially sunshinesolaic and bees--on--toast on Tumblr.[1]
Flag
The allion flag was created by bees--on--toast on Tumblr.