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pre·sphe·noid -'sfē-.nȯid n a presphenoid bone or cartilage usu. united with the basisphenoid in the adult and in humans forming the anterior part of the body of the sphenoid
presphenoid also pre·sphe·noi·dal -sfi-'nȯid-əl adj indicating or relating to a median part of the vertebrate skull anterior to the basisphenoid
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pre·sphe·noid (pre-sfeґnoid) 1. pertaining to the anterior part of the body of the sphenoid bone. 2. presphenoid part of sphenoid bone; see under part.Medical dictionary. 2011.