The word cisgender (often shortened to cis; sometimes cissexual) describes a person whose gender identity corresponds to their sex assigned at birth, i.e., someone who is not transgender.[1][2][3] The prefix cis- is Latin and means on this side of. The term cisgender was coined in 1994 as an antonym to transgender, and entered into dictionaries starting in 2015 as a result of changes in social discourse about gender.[4][5] The term has been and continues to be controversial and subject to critique.
Related concepts are cisnormativity (the presumption that cisgender identity is preferred or normal) and cissexism (bias or prejudice favoring cisgender people).
^"cisgender". Merriam-Webster.com Dictionary. n.d. Retrieved March 8, 2021.
^Martin, Katherine. "New words notes June 2015". Oxford English Dictionary. Oxford University Press. Archived from the original on August 14, 2015. Retrieved August 2, 2015.