Atmosian, also called atmospherian and demispacialian, is a non-binary gender alignment from the galactian system. It is the demigender version of spacialian, meaning it only has a partial connection to spacialian. The "other part" can be another galactian alignment or it can be another unrelated gender. The "other part" can not be singularian, as singularian can only exist by itself.
It can also be called demixenic, based on xenic.
The term was coined on November 15th, 2020, by Reddit user u/gwhy334.
The flag was created by Reddit user u/gwhy334 on November 15th, 2020. The alternate flag was created by the same user on or before November 23rd, 2020, this time on their FANDOM account Gwhy334.