Definition of foam rubber in English:

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foam rubber

noun

[mass noun]
A lightweight form of rubber made by solidifying liquid foam: our helmets were plastic, with foam rubber inside [as modifier]: foam rubber mats
More example sentences
  • The inside of the box had been filled with foam rubber.
  • The material is whipped with air to form a foam, which is heated to produce foam rubber.
  • A bolete has a mass of tubes, looking rather like foam rubber.
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