ebonite
(ˈɛbənaɪt)
[f. ebon-y + -ite.]
A hard compound of india-rubber and sulphur, united by the action of heat. Another name for it is vulcanite. Also attrib.
| 1861 Chem. News Oct. 221 The material known as hard india rubber, vulcanite,..or in its most perfect condition as ebonite. 1879 in Cassel's Techn. Educ. IV. 288/1 Hard or horny caoutchouc, such as will come under the designation of ebonite. |