Abiatrinary refers to someone who is both abinary and atrinary. This could also be called ABAT due to abinary being shortened to AB and atrinary being shortened to AT. Labels that fall underneath ABAT include atrigirl and atriboy. Someone who is AB but not AT is ternabinary, and someone who is AT but not AB is atribinary.
Abiatri- could be used as a prefix too if one doesn't feel comfortable with atri-. For example, one could be a abiatrigirl, instead of a atrigirl.
History
The term was coined by Reddit user hiitsyaz in August 2021, with no specified date.
Flag
The abiatrinary flag's colors are a combination of the atrinary flag and the abinary flag. Since the colors are a combination of the abinary flag and the atrinary flag, the colors have the same meaning as these same two flags.
Etymology
The name is a combination of the labels abinary and atrinary.