a. Math. = COAXIAL.
1879. Thomson & Tait, Nat. Phil., I. I. 165. Coaxal circular cylinders.
1881. Maxwell, Electr. & Magn., II. 285. Two circular and coaxal solenoids.
Hence Coaxality.
1863. R. Townsend, Mod. Geom., I. 207. The locus circle will pass evidently through all the phases of coaxality.
