Biaxial vs. Diaxial — What's the Difference?

Having two axes.

Having or relating to two axes; biaxial.

Having two axes.

Referring to a situation in which two substituents on a cyclohexane ring are both in axial position

Having two axes of rotation and two planes of symmetry (e.g. having the shape of a spheroid)

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.)

Having two axes;