What is a sideborn?

A sideborn is a term used in the "Foreigner" series by C.J. Cherryh to describe individuals born to a mother who is a member of the alien race known as the Atevi, but conceived with a human father. This status makes them unique, as they embody characteristics of both cultures, often facing challenges related to identity and belonging. Sideborn individuals often have a complex relationship with their dual heritage, navigating the intricacies of both Atevi and human societies.