• synonyms


[koh-ak-see-uh l]
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  1. Also co·ax·al [koh-ak-suh l] /koʊˈæk səl/. having a common axis or coincident axes.
  2. Geometry.
    1. (of a set of circles) having the property that each pair of circles has the same radical axis.
    2. (of planes) intersecting in a straight line.
  3. (of a loudspeaker) having two or more cones with their centers mounted on the same axis.
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Origin of coaxial

First recorded in 1880–85; co- + axial
Related formsco·ax·i·al·ly, adverbun·co·ax·al, adjectiveun·co·ax·i·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples

British Dictionary definitions for coaxial


coaxal (kəʊˈæksəl)

  1. having or being mounted on a common axis
  2. geometry (of a set of circles) having all the centres on a straight line
  3. electronics formed from, using, or connected to a coaxial cable
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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 coaxial


"having a common axis," 1904, as a term in mathematics; coaxial cable is 1934. See co- + axial.

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Online Etymology Dictionary, © 2010 Douglas Harper