plastic foam

noun

expanded plastic.

Origin of plastic foam

First recorded in 1940–45

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

Examples from the Web for plastic foam

Contemporary Examples of plastic foam

Plastic-foam containers are used for everything from awful conference room coffee to Chinese takeout.
Bloomberg Crosses the Thin Foam Line
Ilana Glazer
February 14, 2013