sphenobasionWiktionary 原文英美构词拆解sphenospheno-前缀basionbasion词干spheno-Wedge, wedge-shaped. · (anatomy) Of or pertaining to the sphenoid bone.词源说明From spheno- + basion.释义名词noun1(anatomy) The midline point on the spheno-occipital synchondrosis.