Ventulian is a xenogender from the element system. It is associated with an "undefined" gender element, which is represented by the element of air. The undefined element is described as an element that "may change in a way that is hard to keep up with, impossible to describe or understand, or simply be vague and fleeting in nature, but it is present". Air is used to represent it because it reflects the nature of the gender element, “up in the air” so to speak.
One whose gender element is purely undefined would be called ventulian. The term can be combined with other gender terms, such as demiventulian, or ventuliboy.
Etymology
The word ventulian comes from the Latin word Venti, which are the Roman version of the Anemoi, the god of the winds.
History
The term ventulian and the flag were made on the Tumblr blog Genderelementarchive on December 23rd, 2017[1].
Flag
The flag's colors are yellow and blue, the usual symbolic colors associated with air. In the center it has a triangle with a line through it - the alchemical symbol for air.