Uniaxial

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Uniaxial \U`ni*ax"i*al\, a. [Uni + axial.]
     1. (Crystallog.) Having but one optic axis, or line of no
        double refraction.
        [1913 Webster]
  
     Note: In uniaxial crystals, the optic axis has the direction


           of the vertical crystallographic axis. All tetragonal
           and hexagonal crystals are uniaxial.
           [1913 Webster]
  
     2. (Biol.) Having only one axis; developing along a single
        line or plane; -- opposed to multiaxial.
        [1913 Webster]