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biaxial

[bahy-ak-see-uh l]
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adjective
  1. having two axes.
  2. Crystallography. having two optical axes along which double refraction does not occur.
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Origin of biaxial

First recorded in 1850–55; bi-1 + axial
Related formsbi·ax·i·al·i·ty, nounbi·ax·i·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for biaxial

biaxial

adjective
  1. (esp of a crystal) having two axes
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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

Word Origin and History for biaxial

adj.

also bi-axial, 1833; see bi- + axial.

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Online Etymology Dictionary, © 2010 Douglas Harper