[yoo-nee-ak-see-uh l]


having one axis.
Crystallography. (of a crystal) having one direction in which double refraction does not occur.
Botany. (of a plant) having a primary stem that does not branch and that terminates in a flower.

Nearby words

  1. uni-,
  2. unialgal,
  3. uniat,
  4. uniate,
  5. uniates,
  6. uniaxial joint,
  7. unibrow,
  8. unicameral,
  9. unicameral bone cyst,
  10. unicameral cyst

Origin of uniaxial

First recorded in 1820–30; uni- + axial

Related formsu·ni·ax·i·al·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for uniaxial

British Dictionary definitions for uniaxial



(esp of plants) having an unbranched main axis
(of a crystal) having only one direction along which double refraction of light does not occur
Derived Formsuniaxially, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012