The Collaborative International Dictionary of English v.0.48:
Squamozygomatic \Squa`mo*zyg`o*mat"ic\ (skw[=a]`m[-o]*z[i^]g`[-o]*m[a^]t"[i^]k), a. (Anat.) Of or pertaining to both the squamosal and zygomatic bones; -- applied to a bone, or a center of ossification, in some fetal skulls. -- n. A squamozygomatic bone. [1913 Webster]