Noted: But “cisgender” and “cis,” used for people whose gender identity aligns with their birth sex, didn’t begin catching on until around 2008, according to Anne Enke, a professor of gender and women’s studies at the University of Wisconsin, Madison. Before that time, she recalls, her undergraduates considered “cisgender” to have “too much of a subcultural ‘insider’ feel,” but then she noticed that an increasing number of students savvy about gender issues “began to casually toss ‘cis’ ” into classroom discussion. (Subscription required.)