The medical prefix term dors(o)- or dors(i)- means “back” or “posterior”.
Example Word: dors(i)/flex/ion
Word Breakdown: Dors(i)- means “back”, flex is a word root for “bend”, -ion is a suffix that refers to “process”.
Definition: Dorsiflexion can be described as the backward bending or contracting of your hands or feet.