Chem. [f. CAOUTCH-OUC + -IN.] A hydrocarbon, C10 H16, contained in the oils produced by distillation of caoutchouc and gutta percha: one of the elements of caoutchoucin.
1863–72. Watts, Dict. Chem., I. 736. Caoutchin is a transparent, colourless, mobile liquid, having an odour like that of oil of orange.
