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hard rubber

rubber vulcanized with a large amount of sulfur, usually 25–35 percent, to render it stiff and comparatively inflexible.
Origin of hard rubber
1855-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for hard-rubber
Historical Examples
  • He groped along the wall for the electric switch, and found only the shank of it—the hard-rubber button having disappeared.

    The Destroying Angel Louis Joseph Vance
  • His hand clutched 12the hard-rubber receiver with white strength.

    Whispering Wires Henry Leverage
  • His hand reached upward and lifted the hard-rubber receiver from the hook.

    Whispering Wires Henry Leverage
  • He took one step forward as Loris swished across the sitting-room, lifted the hard-rubber receiver and voiced a soft, “Hello!”

    Whispering Wires Henry Leverage
  • We have, then, a glass or hard-rubber jar containing two lead plates and a solution consisting of water and sulphuric acid.

    ABC of Electricity William Henry Meadowcroft
  • The touch key ended in a hard-rubber knob which could be brought in contact with the skin of the subject.

British Dictionary definitions for hard-rubber

hard rubber

a hard fairly inelastic material made by vulcanizing natural rubber See vulcanite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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