Added 10 October 2026
styrofoam
/ˈstaɪ.ɹə.fəʊm/ noun
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about styrofoam at Wordnik → Where our words come from →
- Expanded polystyrene foam, such as is used in cups and packaging.
Origin
Genericized trademark of Styrofoam, from -styr- (from polystyrene) + -o- + foam.
From Wiktionary, via Kaikki.org (CC BY-SA)