Nulltrois

Nulltrois, nullitrois, nulitrois, or nultrois is a leptral descriptor of nullity. It lacks a single definition but can include:
 * Gendernull
 * Zerogenders
 * Ambitrois of negatrois × positrois
 * Null
 * Genderfree
 * Mnioct
 * Gendervoid
 * Genderempty