sphenopalatine Definition

of, relating to, lying in, or distributed to the vicinity of the sphenoid and palatine bones

a sphenopalatine part; specifically : pterygopalatine ganglion

a foramen between the sphenoidal and orbital parts of the vertical plate of the palatine bone; also : a deep notch between these parts that by articulation with the sphenoid bone is converted into a foramen

pterygopalatine ganglion

an autonomic ganglion of the maxillary nerve that is situated in the pterygopalatine fossa and that receives preganglionic parasympathetic fibers from the facial nerve and sends postganglionic fibers to the nasal mucosa, palate, pharynx, and orbit —called also Meckel's ganglion, sphenopalatine ganglion