|1.||[ adjective ] belonging to or on or near the back or upper surface of an animal or organ or part|
"the dorsal fin is the vertical fin on the back of a fish and certain marine mammals"
|2.||[ adjective ] (biology) facing away from the axis of an organ or organism|
"the abaxial surface of a leaf is the underside or side facing away from the stem"
|Related terms:||adaxial biology|