a. [formed as if ad. Gr. *ἀντικλαστικ-ός, f. ἀντικλά-ειν, f. ἀντί contrary + κλά-ειν to bend.] Applied to a double-curved surface, of which the two curvatures, transverse to each other, are in opposite directions; convex in its length, and concave in its breadth, or vice versâ.
1879. Thomson & Tait, Nat. Phil., I. I. § 128. We may divide curved surfaces into Anticlastic and Synclastic. A saddle gives a good example of the former class; a ball of the latter…. The outer portion of an anchor-ring is synclastic, the inner anticlastic.
