Cisgender and cissexual (often abbreviated to simply cis) describe related types of gender identity where an individual's experience of their own gender matches the sex they were assigned at birth.
A label for "individuals who have a match between the gender they were assigned at birth, their bodies, and their personal identity" as a complement to transgender.
tl;dr
Cis are the Normal regular births.
Anonymous D replied with this 12 years ago, 6 hours later, 2 days after the original post[^][v]#472,290
@previous (Syntax) > Cis are the Normal regular births. > This implies trans are abnormal.
FYI, this might get someone telling you to check your privilege.