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foam rubber

Definitions of foam rubber
  1. noun
    spongy rubber; made by introducing air bubbles before vulcanization and used for cushioning or upholstery
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    type of:
    foam
    a lightweight material in cellular form; made by introducing gas bubbles during manufacture
    India rubber, caoutchouc, gum elastic, natural rubber, rubber
    an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products
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