An adjective and umbrella term to describe individuals whose gender expression, gender identity or gender role differs from gender norms associated with their assigned birth sex.

American Psychological Association – Divisions 16 and 44. (2015). Key terms and concepts in understanding gender diversity and sexual orientation among students [Pamphlet]. Retrieved from http://www.apa.org/pi/lgbt/programs/safe- supportive/lgbt/key-terms.pdf.