collagenous|kəˈlædʒɪnəs| [f. collagen + -ous.] Of the nature of, or containing collagen. 1859Huxley in Todd Cycl.Anat. V. 504/1 The extreme transparency of the collagenous substance.1878Foster Phys. ii. i. §4. 238 The collagenous tissues are dissolved.