Disexual

Disexual or Dyosexual is a term for sexual attraction to precisely two genders, which may be binary genders or nonbinary genders. It is similar to bisexual but much more specific, since bisexuals may also be attracted to more than two genders.

In scientific usage "disexual" means "having or consisting of two sexes".

History
Dyosexual was coined by Mod Dawn on the Tumblr blog "neolabels" on 22 December 2018. Disexual was independently coined on the LGBTA wiki discord server by Choo Choo Mf/HakuoTan on 28 June 2020.