[koh-ak-see-uh l]


Also co·ax·al [koh-ak-suh l] /koʊˈæk səl/. having a common axis or coincident axes.
  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.
(of a loudspeaker) having two or more cones with their centers mounted on the same axis.

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

Related Words for coaxial

cord, rope, wire, link, boom

Examples from the Web for coaxial

Historical Examples of coaxial

British Dictionary definitions for coaxial


coaxal (kəʊˈæksəl)


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

Online Etymology Dictionary, © 2010 Douglas Harper