polyfoam

[pol-ee-fohm]
noun
  1. a rigid, semirigid, or rubbery foam composed of minute bubbles of air or carbon dioxide embedded in a polymer matrix, often polyurethane: used in mattresses, padding, insulation, etc.

Origin of polyfoam

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018