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
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
Next, the team cut black polystyrene food containers and coffee cup lids into small pieces, then subjected those to the light treatment.
—Ben Coxworth, New Atlas, 25 Nov. 2024
See all Example Sentences for polystyrene 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
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
Next, the team cut black polystyrene food containers and coffee cup lids into small pieces, then subjected those to the light treatment.
—Ben Coxworth, New Atlas, 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 26 Dec. 2024.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share