polystyrene
noun
poly·sty·rene
ˌpä-lē-ˈstī-ˌrēn 
: a polymer of styrene
especially
: a rigid transparent thermoplastic that has good physical and electrical insulating properties and is used especially in molded products, foams, and sheet materials
Examples of polystyrene in a Sentence
Recent Examples on the Web
Starting Wednesday, users of polystyrene foam ware in California are required to show that at least 25 percent of the products are recycled or stop using them, a de facto ban given the paltry rate of recycling for plastic foam ware.
—
George Monastiriakos, Newsweek, 31 Dec. 2024
The study found higher levels of toxic flame retardants in polystyrene plastic, which is labeled with the number 6, said Liu.
—Karen Garcia, Los Angeles Times, 19 Dec. 2024
Most research around microplastics pollution focus on materials like polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polystyrene (PS) that have become ubiquitous in modern life.
—Laurie Winkless, Forbes, 18 Dec. 2024
The drone’s body is constructed from polystyrene and plywood, unlike the aluminum or composite materials typically used in most military drones.
—Vikram Mittal, Forbes, 25 Nov. 2024
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George Monastiriakos, Newsweek, 31 Dec. 2024
The study found higher levels of toxic flame retardants in polystyrene plastic, which is labeled with the number 6, said Liu.
—Karen Garcia, Los Angeles Times, 19 Dec. 2024
Most research around microplastics pollution focus on materials like polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polystyrene (PS) that have become ubiquitous in modern life.
—Laurie Winkless, Forbes, 18 Dec. 2024
The drone’s body is constructed from polystyrene and plywood, unlike the aluminum or composite materials typically used in most military drones.
—Vikram Mittal, Forbes, 25 Nov. 2024
See all Example Sentences for polystyrene
Dictionary Entries Near polystyrene
Cite this Entry
“Polystyrene.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polystyrene. Accessed 6 Feb. 2025.
Copy CitationKids Definition
polystyrene
noun
poly·sty·rene
ˌpäl-i-ˈstī(ə)r-ˌēn
: a stiff transparent plastic used chiefly in molded products, foams, and sheet materials
Medical Definition
polystyrene
noun
poly·sty·rene
ˌpäl-i-ˈstī(ə)r-ˌēn
: a polymer of styrene
especially
: a rigid transparent thermoplastic that has good physical and electrical insulating properties and is used especially in molded products, foams, and sheet materials
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