Definition of "sphenoidal" []

• Sphenoid (adjective)
• Shaped like a wedge (adjective)

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• "I went to the doctor and he ran an 8-inch trocar, like a giant hypodermic needle, up my nose, through the bone and into my sphenoidal sinus."
• "Mr. Bowlby made a _post-mortem_ examination, and found considerable pulping of the tip of the right frontal and left temporo-sphenoidal lobes, and a thick layer of hæmorrhage extending over the whole base of the brain."
• "The sphenoidal sinus near F opens into the upper meatus."