1. The back; the ridge of a hill; the upper surface of the body of a shell.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• sorsum,
• corsum,
• dolium,
• jorium,
• noisum,
• dorso,
• dortur,
• mirksum,
• Dorrul,
• dorsie,
• dopramm,
• dorsza,
• desorsum,
• dersum,
• deorsuum,
• dorsilum,
• dorselum,
• zorium,
• Dopromm,
• Diorium

• doorjamb.

The adjective form of the word "dorsum" is "dorsal".

The plural of the "dorsum" can be the "dorsa".

The singular of the "dorsum" can be the "dorsum".