dorsum Meaning, Definition & Usage

  1. noun the posterior part of a human (or animal) body from the neck to the end of the spine
    back.
    • his back was nicely tanned
  2. noun the back of the body of a vertebrate or any analogous surface (as the upper or outer surface of an organ or appendage or part)
    • the dorsum of the foot

WordNet

Dor"sum noun
Etymology
L.
Definitions
  1. The ridge of a hill.
  2. (Anat.) The back or dorsal region of an animal; the upper side of an appendage or part; as, the dorsum of the tongue.

Webster 1913