Main Entry: maxillary process Function: noun : a triangular embryonic process that grows out from the dorsal end of the mandibular arch on each side and forms the lateralpart of the upper lip, the cheek, and the upper jaw except the premaxilla
maxillary processn. A thin plate projecting from the upper border of the lower nasal concha, articulating with the maxilla and partly closing the orifice of the maxillary sinus.