squa·mo·sal 
(skwə-mōsəl, -zəl)
(skwə-mōsəl, -zəl)adj.
Of or relating to the thin, platelike part of the human temporal bone or to a corresponding part in other vertebrates.
n.
A squamosal bone.
[From Latin squāmōsus, squamous; see SQUAMOUS.]