Cinctagirl is a xenogender based on having many genders, yet still having a static feminine gender in the middle.
The masculine version of this term is cinctaboy, and the neutral version of this term is cinctaneu.
History & Flag
The term cinctagirl was coined by Tumblr user pupyzu on March 1st, 2021[1], along with cinctaboy and cinctaneu. The flag was created with the term on the same date.
Etymology
The meaning of the term is based off of "-girl" & "cincta", which means surrounded in Latin.