† cartilaˈgineous,a.Obs. Also 7 -ious. [f. L. cartilāgine-us (f.cartilāgin-em cartilage) + -ous.] = cartilaginous. 1646Sir T. Browne Pseud. Ep. iii. xix, The Lamprey hath..for the spine or back-bone, a cartilagineous substance.1693Phil.Trans. XVII. 930 Cartilagineous Fishes.