An abbreviation of cisgendered or cissexual heterosexual: a person that identifies as
the sex they were born as, and are attracted to people of the sex opposite of theirs, who are usually also cisgendered or cissexual. Mostly used in social
justice circles to describe people commenting on LGBT+ matters when they probably shouldn't be.
Disclaimer: use of labels might be
seen as limiting, marginalizing or alienating. Attraction also applies to romantic attraction: heteroromantic, homoromantic, etc.