bĭtūmĭno

I. to cover or impregnate with bitumen (late Lat.), Ambros. Hexaëm. 6, 9, 72; cf.: bitumino, ἀσφαλτόω, Gloss. Lab.—Hence, P. a.: bĭtū-mĭnătus, a, um, impregnated with bitumen, bituminous: aqua, Plin. 31, 6, 32, § 59.