The system of belief that there are only two genders (men and women) and that gender is inherently tied to one’s sex assigned at birth. It holds cisgender people as superior to transgender people, and punishes or excludes those who don’t conform to society’s expectations of gender.

University of California-Berkeley Gender Equity Center. (2013). Definition of terms: genderism. Retrieved from http://geneq.berkeley.edu/lgbt_resources_definiton_of_terms#genderism.