a. [ad. L. type *undulār-is: cf. next.] Wavy, undulating. Hence Undularly adv.
1738. Chambers, Cycl., s.v. Muscle, They contract themselves into an undular kind of surface.
1805. T. Weaver, trans. Werner’s Ext. Charact. Fossils, 275. 1. Spherically… 2. Undularly.
