Pontine,a.2|ˈpɒntaɪn, ˈpɒntiːn| [f. L. Pontus, Gr. Πόντος, the Black Sea + -ine1.] = Pontic a.1 1920Q. Rev. Jan. 244 It would be necessary to guarantee a local autonomy to the Greeks of the Pontine littoral.1968S. Johnson Turkish Panorama x. 96, I was now in the very foothills of the Pontine Mountains.