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vulcanite

noun
vul·​can·​ite | \-ˌnīt\
plural -s

Definition of vulcanite 

: a hard vulcanized rubber : ebonite, hard rubber

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First Known Use of vulcanite

1856, in the meaning defined above

History and Etymology for vulcanite

vulcan + -ite

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The first known use of vulcanite was in 1856

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