Pronunciation: (kō-ak'sē-ul), [key]
1. Also,co•ax•alPronunciation: (kō-ak'sul). [key]having a common axis or coincident axes.
a. (of a set of circles) having the property that each pair of circles has the same radical axis.
b. (of planes) intersecting in a straight line.
3. (of a loudspeaker) having two or more cones with their centers mounted on the same axis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.