Spatiumgender Is a form of multigender where some gender feel bigger or smaller but the gender is 100% there. Like for example girl, could feel smaller but it wouldn't be demigirl. Spatium is originated from the latin word meaning size.
History
Spatiumgender was coined by fandom user Emberfrost-cat.
Flag
The Spatiumgender flag was created on April 18 by fandom user EmperorTaco. The flag colors mean nothing at the moment.