In medical terminology, maxillo- combines with other roots or suffixes to describe structures, conditions, or procedures involving the maxilla (upper jawbone), which forms the central upper face, supports the upper teeth, and contributes to the nasal and orbital cavities. It often appears in terms like maxillofacial (upper jaw and face), maxillomandibular (upper and lower jaws), and maxillectomy (surgical removal of the maxilla)
latin From Latin maxilla, meaning “upper jaw” or “jawbone,” a diminutive of mala (“jaw, cheekbone”). Entered English medical use in the 17th century; related to Proto-Italic smakslā with diminutive suffix -elos, evolving through sound changes.