Definitions

1. adjective

Relating to or situated near the back or dorsal side of an animal, especially in reference to the development of a vertebrate embryo.

“In the early stages of development, the heart is located dorsalmost in the embryo.”

2. noun

A region or part of an animal’s body that is situated near the back or dorsal side.

“The dorsalmost part of the fish’s body is where its dorsal fin is located.”