axial

ax·i·al

adj \ˈak-sē-əl\

Definition of AXIAL

1

: of, relating to, or having the characteristics of an axis

2

a : situated around, in the direction of, on, or along an axis b : extending in a direction essentially perpendicular to the plane of a cyclic structure (as of cyclohexane) <axial hydrogens>—compare equatorial