uniaxial

Having only one axis.

Of, relating to, or affecting one axis.

Having one direction along which double refraction of light does not take place. Used of a crystal.

Having but one optical axis, or axis of double refraction. Iceland spar is a uniaxial crystal. See refraction, and cut under interference.

In biology, having one main axis to which the other axes are subordinate; growing lengthwise.

In botany, having a single axis, as when the primary stem of a plant does not branch and terminates in a flower.

Monaxon, as a sponge-spicule.

A uniaxial crystal.

Also uniaxal.

Having but one optic axis, or line of no double refraction.