RUBBER

n. Ru3b'u5r. See CAOUTCHOUC and MASSAGE. Hard r. Ebonite; vulcanized caoutchouc which has been rendered hard and susceptible of a polish by being subjected to pre ure and heat during the proce of vulcanization, or by the incorporation of some other ingredient, such as tar. white lead, etc. It can be molded and rolled at a high temperature, and when cold is firm, brittle, hard, light, impermeable to liquids, and resistant to ordinary chemicals. [B, 2, 81.] Indian r., India-r. See CAOUTCHOUC. Vulcanized r. See Vulcanized CAOUTCHOUC. [s. 418]