Presphenoid \Pre*sphe"noid\, a. (Anat.)
Situated in front of the sphenoid bone; of or pertaining to
the anterior part of the sphenoid bone (i. e., the
presphenoid bone).
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.
Source: Webster's Revised Unabridged Dictionary (1913)
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