Presphenoid - definition of Presphenoid by The Free Dictionary
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|a.||1.||(Anat.) Situated in front of the sphenoid bone; of or pertaining to the anterior part of the sphenoid bone (i. e., the presphenoid bone).|
|(Anat.) the anterior part of the body of the sphenoid bone in front of the basisphenoid. It is usually a separate bone in the young or fetus, but becomes a part of the sphenoid in the adult.|
|n.||1.||(Anat.) The presphenoid bone.|
References in periodicals archive
 The post-sphenoid and presphenoid
centers appear at 14 weeks and 17 weeks respectively.
However, according to Levine & Clemente (2005) its development differs, as it does not appear as an outpouching from the lateral nasal wall, but rather a constriction of the developing presphenoid
recess, followed by secondary pneumatization postnatally.
This remnant extends through the sphenoidal synchondrosis, between the presphenoid