Abaxial
Part of speech: adjective
Definition: On the side that is away from the axis or central line, usually on the underside. A direction perpendicular to an axis or the coordinate that measures displacement in such a direction.
Dorsal
Part of speech: adjective
Definition: With respect to, or concerning the side in which the backbone is located, or the analogous side of an invertebrate.Having only one sharp side.An anatomical term referring to the top surface of either foot and/or hand.