You searched for: “adaxial
Nearest to or facing toward the axis of an organ or organism: "The upper side of a leaf is known as the adaxial surface."

Abaxial describes a plant part which is on the side or surface of an organ, facing away from the axis.

This entry is located in the following units: ad- (page 6) -al; -ial, -eal (page 6) -ial (page 1)