Biol. [ad. F. collagène, f. Gr. κόλλα glue + -gène = -GEN (taken in sense ‘producing’). (The etymological form would be collogen: cf. Gr. κολλοπώλης glue-dealer, etc.)]
That constituent of connective tissue which yields gelatin on boiling.
c. 1865. Circ. Sc., I. 360/2. The tissue yielding gelatine of bones, or ‘collagen.’
