| synchondrosis spheno-occipitalis | Cartilaginous union between the body of the sphenoid and the basilar portion of the occipital; it fuses by the twentieth year; incorrectly called spheno-occipital suture. Synonym: synchondrosis spheno-occipitalis, spheno-occipital joint, spheno-occipital suture. (05 Mar 2000) |
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| synchondrosis sphenopetrosa | Sphenopetrous synchondrosis, fibrocartilage filling the sphenopetrosal fissure. Synonym: synchondrosis sphenopetrosa. (05 Mar 2000) |