The word is a modern English compound formed by combining the Latin prefix 'ultra-' with the established English adjective 'orthodox.' 'Orthodox' itself has a rich history, originating from the Greek elements orthos ("correct, straight") and doxa ("opinion, glory"), which together conveyed the sense of "correct belief." The Latin prefix 'ultra-', meaning "beyond," intensifies this concept to denote a position or practice that goes beyond what is traditionally considered orthodox, pushing into the realm of the extremely strict or fundamentalist. Thus, the term logically builds from its parts to describe an extreme adherence to traditional religious views.

Structure: ultra (beyond) + orthodox (correct belief) - ultra: From Latin ultra, meaning "beyond, on the other side." It functions as a prefix indicating an extreme degree. - orthodox: From Greek orthodoxos, meaning "having the right opinion." It functions as the core adjective meaning conforming to established doctrine.