biaxal

Adjective

biaxial (not comparable)

1. Having two axes.
2. Having two axes of rotation and two planes of symmetry (e.g. having the shape of a spheroid)
3. Along two axes; e.g. in engineering, a shear or compression text of a material along two axes
   • mapping the shape of the Earth onto a biaxial ellipsoid
4. Having a value in two perpendicular directions. (In solid mechanics, it generally means that normal stresses exist in two of the possible three directions, though not necessarily equal in sign or magnitude.)