Cisgender, often shortened to Cis, is the opposite of transgender or cisn't, meaning someone who identifies as the gender they were assigned at birth. It describes men who were assigned male at birth and women who were assigned female at birth who still go by these terms. Some intersex individuals who are non-binary may think of themselves as cisgender, though that is not the case for everyone.
History & Coining[]
The origin of the term in reference to gender is credited to Carl Buijs, who proposed the term in 1995, and although the word has been used on the internet before 1995, Carl Buijs is the first recorded source to define the term.
Flags & Symbols[]
The cisgender flag was created by DeviantArt user FlagsforCisHets on August 4, 2016. It has no confirmed meaning.
Two other flags were created on the same day by the same user. The pink and blue is said to have been created as the heterosexual flag, however it was posted with the title "Straight/Cisgender" flag. The flag with the white heart was given the same title, as such it is unclear if these flags were intended as cisgender flags, heterosexual flags or as cisgender heterosexual flags. No additional information is given for either of them.
Etymology[]
"Cis" comes from the Latin prefix meaning "on the same side," as in the cis-trans distinction in chemistry.
Resources[]
https://www.merriam-webster.com/dictionary/cisgender
https://web.archive.org/web/20230213215918/http://cydathria.com/ms_donna//tg_def.html#cisgender