bigenderism

Etymology 1
From ; modelled on. Coined in 2003.

Noun

 * 1) The theory that society enforces a strict male-female gender binary, privileges masculinity and maleness over femininity and femaleness, and (when the theory is strictly construed) limits gender to a direct correspondence with assigned sex at birth.

Etymology 2
From.

Noun

 * 1) The state of being bigender; the state of having two (or multiple) genders simultaneously.