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Hard rubber substance
Answer for the clue "Hard rubber substance ", 7 letters:
ebonite
Alternative clues for the word ebonite
Word definitions for ebonite in dictionaries
Wikipedia
Word definitions in Wikipedia
Ebonite is a brand name for very hard rubber first obtained by Charles Goodyear by vulcanizing natural rubber for prolonged periods. For vulcanizing natural rubber he received patent number 3633 from the United States Patent Office on June 15, 1844. Besides ...
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
1860, from ebon + -ite (1).
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Ebonite \Eb"on*ite\, n. (Chem.) A hard, black variety of vulcanite. It may be cut and polished, and is used for many small articles, as combs and buttons, and for insulating material in electric apparatus.
Usage examples of ebonite.
With a fretsaw I cut these down to smaller plates, discarding the ebonite at the edges, which was green with age, and turned them on a lathe, in a foul cloud of black dust that got into my hair, eyes, teeth, fingernails.