foam rubber

1. 1.

   spongy rubber; made by introducing air bubbles before vulcanization and used for cushioning or upholstery

   Broaderrubberfoam

Questions about foam rubber

What does foam rubber mean?

foam rubber means "spongy rubber; made by introducing air bubbles before vulcanization and used for cushioning or upholstery".

Is foam rubber a common word?

foam rubber is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.