English word polyfoam comes from English foam, English poly- (Many. Polymer.)
| Dictionary entry | Language | Definition |
|---|---|---|
| foam | English (eng) | (by extension) Sea foam; (figuratively) the sea.. A substance composed of a large collection of bubbles or their solidified remains.. A substance formed by trapping pockets of gas in a liquid or solid. (intransitive) To form or emit foam.. (intransitive) To spew saliva as foam, to foam at the mouth. |
| poly- | English (eng) | Many. Polymer. |
| polyfoam | English (eng) | Any of various materials, made from synthetic polymers, that have a cellular structure and are used in upholstery or insulation. |