polystyrene

noun
poly·sty·rene | \ˌpä-lē-ˈstī-ˌrēn \

Definition of polystyrene 

: 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 City Council passed a ban on polystyrene foam containers for carryout food and drink in March that will take effect in October 2019. Lorraine Mirabella, baltimoresun.com, "More eateries, businesses do away with plastic straws," 13 July 2018 Major cities including San Jose, San Francisco and Long Beach have banned polystyrene, and Los Angeles officials have been discussing it. David Garrick, sandiegouniontribune.com, "Proposal would ban sale and use of polystyrene in San Diego, affecting cups, egg cartons, coolers, pool toys and more," 31 May 2018 Other researchers had already found that mealworms can digest a particular plastic called polystyrene. The Economist, "Another way to recycle plastic," 24 May 2018 Large private food retailers like McDonald’s, Dunkin’ Donuts, Jamba Juice, and Chick-fil-A already have phased out polystyrene products or plan to phase them out or implement new recycling processes. Camille Harmer, Fortune, "How Banning Plastic Straws Could Make Pollution Even Worse," 12 July 2018 San Diego is considering prohibiting a particularly ubiquitous plastic product: expanded polystyrene (EPS)—better known as styrofoam—which is used widely in takeout food containers, cups, ice chests, and packing peanuts. Camille Harmer, Fortune, "How Banning Plastic Straws Could Make Pollution Even Worse," 12 July 2018 At one point, rescuers dropped packs filled with food, water and flashlights through a crack in the roof of the caverns along with writing materials and instructions to float polystyrene boxes out of the cave with details on their location. James Hookway, WSJ, "Thai Soccer Players, Coach Found Alive in Cave After 10 Days Underground," 3 July 2018 Surfrider is also engaged in campaigns to ban single-use plastic bags and polystyrene products to fight local beach and water pollution under its Rise Above Plastics program. Joshua Emerson Smith, sandiegouniontribune.com, "Surfrider, volunteers prepare for post-Fourth of July beach cleanup," 3 July 2018 Neither do polystyrene containers — like the ones restaurants use for leftovers or take-out meals — even if the container has a recycling triangle on it. Larry Barszewski, Sun-Sentinel.com, "Recycling's new reality: 'When in doubt, throw it out'," 29 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polystyrene.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of polystyrene

1927, in the meaning defined above

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7 Sep 2018

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The first known use of polystyrene was in 1927

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More Definitions for polystyrene

polystyrene

noun
poly·sty·rene | \ˌpäl-i-ˈstī(ə)r-ˌēn \

Medical Definition of polystyrene 

: 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

More from Merriam-Webster on polystyrene

Nglish: Translation of polystyrene for Spanish Speakers

Britannica.com: Encyclopedia article about polystyrene

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