Pronunciation: (skwu-mō'sul), [key]
1. Anat.of or pertaining to the thin, scalelike portion of the temporal bone that is situated on the side of the skull above and behind the ear.
2. Zool.pertaining to a corresponding bone in other vertebrates.
a squamosal bone.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.