District of Columbia Code Division I. Government of District. § 1-607.61. Definitions.

(1) “Cisgender” means individuals whose sex assigned at birth matches the individual's perceived gender.

(2) “Gender identity” means an individual's internal sense of the individual's gender, which may be the same as or different from sex assigned at birth and can include male, female, neither, or both.

(3) “Non-binary” includes individuals whose gender identity is neither entirely male nor entirely female, or varies between the two.

(4) “Transgender” includes individuals whose gender identity or expression is different from that typically associated with their assigned sex at birth.