a. [f. prec. + -AL.] = CONCENTRIC. Const. with, to.
1570. Billingsley, Euclid, App. 46. When the angles compased in of the Pentagon bases, are concentricall with the triangles.
1692. Ray, Dissol. World, iii. (1732), 39. Two cylindrical Walls concentrical one to another.
1749. Phil. Trans., XLVI. 244. You find the Sun precisely concentrical with the Field of the Telescope.
1863. Lockyer, Guillemin’s Heavens (ed. 3), 397. The gradation is replaced by concentrical strata.
fig. a. 1652. J. Smith, Sel. Disc., IX. ii. (1821), 417. The motions of a good man are methodical, regular, and concentrical to reason.
