noun which may take the genitive case particle 'no'
forehead; frontal region
Anatomical term used in medical or formal contexts. In everyday speech, おでこ or ひたい are more common.
前額部に軽い打撲を負った。
I suffered a minor contusion to the forehead.
CT画像で前額部の骨折が確認された。
A fracture of the frontal region was confirmed on the CT scan.
Compound of 前 (front) + 額 (forehead) + 部 (part, region). A straightforward anatomical term.